Admin users can determine whether staff members are able to import their own timesheets.
You can check whether staff have the ability to do this for themselves in your company settings, under the permissions tab.
Scroll to the bottom of the page, where you will find staff can import their onwn timesheets. If this box is ticked, this means that staff members will be able to follow the steps outlined here to import their own timesheet date. If unticked, only admins and line managers will be able to do this for staff members.