If an employee punched some time in one department and the leftover in another department , it is possible to distribute hours between the two departments in the timesheet .

Go to Edit<Time Management<Time Sheet . Click assign and redistribute against the punch in row that needs to be redistributed.

TimeSheet 

Redistribute Window

To divide hours  within the department select Redistribute Hours checkbox

To divide hours between two departments keep , for instance  the above screenshot has registered hours 5 ,and we need to provide the first row 3 hours and 2 hours to another. Enter 3 instead of 5 (a second row will automatically pop up)

Enter the required information  and save. The timesheet will also display the hours divided between the two departments