Operation that should not spread over multiple days

A times, we have operations for example oven time of 6 hours, which need to be continuously.  Assuming oven capacity is 8 hours per day,  one operation need 6 hours, the second operation need 5 hours. in this case, first operation is scheduled on day 1,   and the second operation can not use the remaining 2 hours in day 1, instead the second oven run should be scheduled in second day.   Hope this feature can be implemented in future. 

Thanks

Liping