follow-up timer clock

Total hours do not count overtime clock, but overtime in hours...Case: When I need to add overtime week on Friday, where the day is divided into four projects, I do not have four hours on one project. I then choose the last project and add 4 hours to a lead that is 13:00-14:30. Then the overtime is included in the total.
And Ref Kim, in the future we will be able to choose hours or clock (which we basically think is good), but then I can not add overtime week in a collective pot as mentioned above?