Admins have an option to set the employee status to Inactive when adding employee/s via Add Single Person or Add Multiple People.
To check the list of Inactive employees:
1. From your Top Navigation, click on the Employees icon > People.
2. Click on the Filter button.
3. Customize the filter by changing the Status from Active to Inactive, then click on Apply.
4. You will now see all the employees with Inactive Status.