When you have an employee that resigned from your company and there is new hiring at the moment, you can choose to edit or transfer the service's licence to a new employee.
Here's how you can do it:-
Step 1 – Go to the left side menu and click “End Users”.
Step 2 – Find the user information you want to edit.
Step 3 – Click “Action” and click “Edit/Transfer end-user”.
Step 4 – Make necessary changes to your details.
Step 5 – Click “Save”.
If there is new hiring at this moment, you may just remove the end-users from the platform. Be reminded not to remove the quantity of the license as this action will reduce your quantity of purchased licenses.