There are 3 types of users:
Admin: This type gives full access and editing permissions (except deleting the organization account),
Employee: This type lets the account owner access only their own data,
Supervisor: This type gives the same permissions as the Employee plus:
Ability to be assigned as a head of department/team/workplace, so they can see attendance reports for people under them and send messages to them,
Ability to be part of approval chain on employees’ requests.
Also, you can expand the supervisor's permissions, so they have some permissions of the admin like adding employees or editing work hours.
From the sidebar click on Organization > Employees. You'll see a list of employees registered to the organization account.
Next to the name of the supervisor you want to manage permissions for, under the Action column, click on Manage Permissions.
You'll see a page with a bunch of permissions, pick the permissions you want, then hit the save button.