Navigate to Tools > Time Tracking > Weekly View.
First, use the search filters to set the appropriate date. Fill in the details of the time sheet, the required fields are client, projects and task.
Type in the number of hours in the first box and number of minutes in the second.
The time sheets can either be marked as billed or unbilled. If the time sheets are marked as unbilled you can convert the time sheet into a draft invoice from the Tools > Time Tracking > Generate Invoice menu once completed.
Click on the Update All button to complete.