This document provides a user guide for an online leave application system. It outlines the key functions for approvers and employees. For approvers, it describes how to apply for subordinates' leaves, approve, reject or cancel leaves, generate reports, and send messages to employees. For employees, it explains how to edit personal details, apply for leaves, view leave history, and check annual leave entitlement. The guide contains screenshots and step-by-step instructions for each system function.