diff --git a/Trenser.Zenvy/Trenser.Zenvy/Trenser.Zenvy.cpp b/Trenser.Zenvy/Trenser.Zenvy/Trenser.Zenvy.cpp
index 4413069..64b1e4b 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/Trenser.Zenvy.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/Trenser.Zenvy.cpp
@@ -1,4 +1,12 @@
+/*
+ * File: Trenser.Zenvy.cpp
+ * Description: Zenvy Main
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "UserInterface.h"
+
 int main()
 {
 	UserInterface userInterFace;
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.cpp
index cb68b98..e5a0d0e 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.cpp
@@ -1 +1,8 @@
+/*
+ * File: ApplicationConfig.cpp
+ * Description: Global Application Config
+ * Author: Trenser
+ * Created: 06-Apr-2026
+ */
+
 #include "ApplicationConfig.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.h b/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.h
index 8e4705e..bbeadd1 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/ApplicationConfig.h
@@ -1,3 +1,10 @@
+/*
+ * File: ApplicationConfig.h
+ * Description: Global Application Config
+ * Author: Trenser
+ * Created: 06-Apr-2026
+ */
+
 #pragma once
 
 namespace Config
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.cpp
index fb3ab62..2ab575a 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: AttendanceManagementService.cpp
+ * Description: Handles Attendance related operations
+ * Author: Trenser
+ * Created: 30-Apr-2026
+ */
+
 #include "AttendanceManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.h
index 64374bf..5f12270 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/AttendanceManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: AttendanceManagementService.h
+ * Description: Handles Attendance related operations
+ * Author: Trenser
+ * Created: 30-Apr-2026
+ */
+
 #pragma once
 class AttendanceManagementService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.cpp
index 9d7fc4f..642c868 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.cpp
@@ -1,65 +1,103 @@
+/*
+ * File: AuthenticationManagementService.cpp
+ * Description: Handles authentication related operations
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include <stdexcept>
 #include "AuthenticationManagementService.h"
 #include "ApplicationConfig.h"
 
+/*
+ * Function: login
+ * Description: Authenticates a user using email and password, determines login status,
+ *              employee type, and designation, and sets the authenticated employee
+ *              in the data store.
+ * Parameters:
+ *    email - employee email address
+ *    password - employee password
+ * Returns:
+ *    AuthenticationDTO containing login status, employee type, and employee designation
+ */
 AuthenticationDTO AuthenticationManagementService::login(const std::string& email, const std::string& password)
 {
-	employeeMap& employees = m_dataStore.getEmployees();
-	Enums::LoginStatus loginStatus = Enums::LoginStatus::USER_NOT_FOUND;
-	Enums::EmployeeType employeeType = Enums::EmployeeType::INVALID;
-	Enums::EmployeeDesignation employeeDesignation = Enums::EmployeeDesignation::INVALID;
-	for (const auto& employee : employees)
-	{
-		if (employee.second->getEmployeeEmail() == email)
-		{
-			if (employee.second->getEmployeePassword() == password)
-			{
-				if (password == Config::Authentication::DEFAULT_PASSWORD)
-				{
-					loginStatus = Enums::LoginStatus::FIRST_LOGIN;
-				}
-				else
-				{
-					loginStatus = Enums::LoginStatus::SUCCESS;
-				}
-				employeeType = employee.second->getEmployeeType();
-				if (employeeType == Enums::EmployeeType::GENERAL)
-				{
-					std::shared_ptr<GeneralEmployee> generalEmployee = std::dynamic_pointer_cast<GeneralEmployee>(employee.second);
-					if (generalEmployee)
-					{
-						employeeDesignation = generalEmployee->getDesignation();
-					}
-					else
-					{
-						throw std::runtime_error("Invalid Employee Type");
-					}
-				}
-				m_dataStore.setAuthenticatedEmployee(employee.second);
-			}
-			else
-			{
-				loginStatus = Enums::LoginStatus::INVALID_PASSWORD;
-			}
-			break;
-		}
-	}
-	return std::make_tuple(loginStatus, employeeType, employeeDesignation);
+    employeeMap& employees = m_dataStore.getEmployees();
+    Enums::LoginStatus loginStatus = Enums::LoginStatus::USER_NOT_FOUND;
+    Enums::EmployeeType employeeType = Enums::EmployeeType::INVALID;
+    Enums::EmployeeDesignation employeeDesignation = Enums::EmployeeDesignation::INVALID;
+    for (const auto& employee : employees)
+    {
+        if (employee.second->getEmployeeEmail() == email)
+        {
+            if (employee.second->getEmployeePassword() == password)
+            {
+                if (password == Config::Authentication::DEFAULT_PASSWORD)
+                {
+                    loginStatus = Enums::LoginStatus::FIRST_LOGIN;
+                }
+                else
+                {
+                    loginStatus = Enums::LoginStatus::SUCCESS;
+                }
+                employeeType = employee.second->getEmployeeType();
+                if (employeeType == Enums::EmployeeType::GENERAL)
+                {
+                    std::shared_ptr<GeneralEmployee> generalEmployee = std::dynamic_pointer_cast<GeneralEmployee>(employee.second);
+                    if (generalEmployee)
+                    {
+                        employeeDesignation = generalEmployee->getDesignation();
+                    }
+                    else
+                    {
+                        throw std::runtime_error("Invalid Employee Type");
+                    }
+                }
+                m_dataStore.setAuthenticatedEmployee(employee.second);
+            }
+            else
+            {
+                loginStatus = Enums::LoginStatus::INVALID_PASSWORD;
+            }
+            break;
+        }
+    }
+    return std::make_tuple(loginStatus, employeeType, employeeDesignation);
 }
 
+/*
+ * Function: changePassword
+ * Description: Updates the password of the currently authenticated user.
+ * Parameters:
+ *    password - new password to be set
+ * Returns:
+ *    None
+ * Throws:
+ *    runtime_error if no authenticated user is found
+ */
 void AuthenticationManagementService::changePassword(const std::string& password)
 {
-	std::shared_ptr<Employee> authenticatedUser = m_dataStore.getAuthenticatedUser();
-	if (authenticatedUser)
-	{
-		authenticatedUser->setEmployeePassword(password);
-	}
-	else
-	{
-		throw std::runtime_error("User not found");
-	}
+    std::shared_ptr<Employee> authenticatedUser = m_dataStore.getAuthenticatedUser();
+    if (authenticatedUser)
+    {
+        authenticatedUser->setEmployeePassword(password);
+    }
+    else
+    {
+        throw std::runtime_error("User not found");
+    }
 }
 
+/*
+ * Function: logout
+ * Description: Logs out the currently authenticated user by clearing authentication data.
+ * Parameters:
+ *    None
+ * Returns:
+ *    None
+ * Throws:
+ *    runtime_error if no user is currently logged in
+ */
 void AuthenticationManagementService::logout() {
 	if (m_dataStore.getAuthenticatedUser()) {
 		m_dataStore.getAuthenticatedUser() = nullptr;
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h
index f838311..392065b 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: AuthenticationManagementService.h
+ * Description: Handles authentication related operations
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 #include <string>
 #include <map>
@@ -19,4 +26,3 @@ public:
 	void logout();
 	void changePassword(const std::string&);
 };
-
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.cpp
index db5a4c9..cb032c3 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: BookingManagementService.cpp
+ * Description: Handle operations related to booking meetings
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "BookingManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.h
index 75d7d57..7f343a4 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/BookingManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: BookingManagementService.h
+ * Description: Handle operations related to booking meetings
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class BookingManagementService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.cpp
index bf8ad9d..5fdebfe 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.cpp
@@ -1 +1,8 @@
+/*
+ * File: EmployeeManagementService.cpp
+ * Description: Handle operations related to employees
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "EmployeeManagememtService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.h b/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.h
index 05e6ca7..3bb2294 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/EmployeeManagememtService.h
@@ -1,3 +1,10 @@
+/*
+ * File: EmployeeManagementService.h
+ * Description: Handle operations related to employees
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class EmployeeManagememtService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.cpp
index a40f268..733f9eb 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: LeaveManagementService.cpp
+ * Description: Handle operations related to leaves
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "LeaveManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.h
index 6447f13..1010ec4 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/LeaveManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: LeaveManagementService.h
+ * Description: Handle operations related to leaves
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class LeaveManagementService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/LogService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/LogService.cpp
index 1742a3d..3e77020 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/LogService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/LogService.cpp
@@ -1,3 +1,10 @@
+/*
+ * File: Log.cpp
+ * Description: Handle operations related to logging
+ * Author: Trenser
+ * Created: 01-Apr-2026
+ */
+
 #include "LogService.h"
 #include "Log.h"
 #include "Factory.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/LogService.h b/Trenser.Zenvy/Trenser.Zenvy/services/LogService.h
index 6918b25..c1cf644 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/LogService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/LogService.h
@@ -1,3 +1,10 @@
+/*
+ * File: Log.h
+ * Description: Handle operations related to logging
+ * Author: Trenser
+ * Created: 01-Apr-2026
+ */
+
 #pragma once
 #include "Log.h"
 
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.cpp
index cc23059..7eaa377 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: NotificationManagementService.cpp
+ * Description: Handle operations related to notifications
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "NotificationManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.h
index f976574..6b4aba1 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/NotificationManagementService.h
@@ -1,5 +1,11 @@
+/*
+ * File: NotificationManagementService.h
+ * Description: Handle operations related to notifications
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class NotificationManagementService
 {
 };
-
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.cpp
index 154cf1f..57ca929 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: PayslipManagementService.cpp
+ * Description: Handle operations related to employee payslips
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "PayslipManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.h
index 04c9805..7f43806 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: PayslipManagementService.h
+ * Description: Handle operations related to employee payslips
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class PayslipManagementService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.cpp
index 5fd0d2d..9e0ef96 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: TalentAcquisitionManagementService.cpp
+ * Description: Handle operations related to Talent Acquisition
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "TalentAcquisitionManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.h
index 855dda7..ed0dd32 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TalentAcquisitionManagementService.h
@@ -1,5 +1,11 @@
+/*
+ * File: TalentAcquisitionManagementService.h
+ * Description: Handle operations related to Talent Acquisition
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class TalentAcquisitionManagementService
 {
 };
-
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.cpp
index f78fe48..8b13b81 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: TeamManagementService.cpp
+ * Description: Handle operations related to Team Management
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "TeamManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.h
index 918229d..21275da 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TeamManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: TeamManagementService.h
+ * Description: Handle operations related to Team Management
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class TeamManagementService
 {
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.cpp b/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.cpp
index 4649010..bc995f9 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.cpp
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.cpp
@@ -1 +1,8 @@
+/*
+ * File: TicketManagementService.h
+ * Description: Handle operations related to Ticket Management
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #include "TicketManagementService.h"
diff --git a/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.h b/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.h
index 1db345b..8a38d98 100644
--- a/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.h
+++ b/Trenser.Zenvy/Trenser.Zenvy/services/TicketManagementService.h
@@ -1,3 +1,10 @@
+/*
+ * File: TicketManagementService.h
+ * Description: Handle operations related to Ticket Management
+ * Author: Trenser
+ * Created: 30-Mar-2026
+ */
+
 #pragma once
 class TicketManagementService
 {