The Timesheets tab is where you can view and record your hours. Use the icon to add entries one at a time.
You can also click and drag directly on the calendar to enter time.
You'll then be able to specify the hours worked, break duration, type of work and add any relevant notes. You can also click on an existing entry to edit or delete it.
The menu icon on the right offers the option to copy the previous week's time entries.