This feature is available in Enterprise and Ultimate editions.
Choose one of the following options to access the Timesheet page. Here, you can enter the amount of you you spend working on a work item.
Option 1. From the My Home Menu
From the main menu, click My Home > Timesheet tab.
Option 2. From the Utility Menu
Click on your username in the Utility Bar (top right corner of any page), and then select Timesheet.
See Entering Time/Hours and Submitting a Timesheet for instructions on how to record the hours you work.