Teambook allows user to enter the time actually spent performing activities, so to enable activity tracking and potentially use this information for billing purposes.
To do so, select the menu Actuals. The screen shows you the current period (and you may use the arrows to switch to another month), indicating in the top left corner the number of total hours available in this given period (based on your exact personal schedule), the number of hours already reported and the number of hours approved.
Using the button Copy planning, each of the days of the displayed period will be pre-filled with the planning information (booking, duration, note).
You may edit any of the entries by selecting it and/or adding a new activity by clicking on +log time