How can I allocate time in my timesheet?

Go to "Time & Attendance" in the left side bar > click on "Timesheets" > click on the eye icon next to the timesheet to which you want to allocate time (note this is only possible when the timesheet has the status "Not Submitted") > click on "Modify" > in the "Time Allocation" column click on "+ Add" > click on "+ Add" to add categories and the duration > click on "Save".