Assign access levels:

Access levels are controlled in your Company settings under Access management.

Access role type

There are 3 roles that gives you different access levels:

Can access everything including all employee data, control of company and all admin settings.
Can access detailed data of employees reporting directly to them and approve their time-off. Can publish announcements and backoffice items.
The default role that all employees are assigned. Can only access their own employee data.

In order to assign access level to specific employees, go to Access management.