YES, you can mark the time log as billable and add notes to that in the timesheet. Please refer below steps to do so;
- Navigate to Left Menu > Time Log > Weekly Timesheet
- Hover on the time slot that you want to edit and click
icon (Refer Image 1) - Put the NOTE, select
mark as the billable hour & click Save (Refer Image 2)
(Image 1)
(Image 2)