Assign a supervisor to the currently selected employee
In the upper area of the page, you can assign a supervisor to a staff member. All users who have the Supervisor right are listed in the selection menu. You assign the right on the Roles/Rights page.
Assign employees to the currently selected supervisor
As soon as a user has the Supervisor right, employees can be assigned to him. In the list of users, you can see whether the employee currently has a supervisor assigned and whether trips are already under review.
You can find more information about the approval workflow here.