Admins add employees, employees submit PTO requests, and each request appears in an inbox and notifies the assigned manager. Managers approve or deny in the app or through secure one-time approval links sent by email, the decision is recorded, and the employee is notified. A calendar shows who is off and when, and the app tracks simple PTO balances, conflict warnings against departments, blackout dates, and holidays, minimum-notice rules, settings, and CSV reports. It is deliberately scoped to stay a simple approval tool rather than a full HR platform.