User Community

Yes. First, "Time Types" must be created under "Administration -> Configuration -> Time Types" i.e."Regular ", "Sick Time" "Vacation, "Overtime, "Time Off", etc.). Then, when time is entered by users, they can associate it with a specific "Time Type". Thus, time reports can be generated and filtered in order to view a specific "Time Type".

Why is it necessary to account overtime in a seperate "Time Type". I expect a tool to generate this automatically. I account my working hours in a task and the tool calculates overtime (working hours - target hours)

AceProject cannot calculate working hours - target hours at this time. Your suggestion is quite interesting however and will be considered for future enhancements. 

Overtime rules can be complicated. For instance, some companies call weekend (or Sunday) work 'Overtime' whether or not the target hours have been reached.