As a line manager, you can approve time for your staff on the My Work, Approvals tab. A list of timesheet submissions is displayed:
You can:
•select the submissions you want to approve and click Accept
•change the data shown using the filter drop-down list
•click 
then:
o Open to view the submission
o View Timesheets to view the timesheet entries in the submission
•click any displayed hours to view the corresponding timesheet entry.