You can block a room from automatic scheduling if it is unavailable at certain times because, for example, it is in use by another school.
Example: Room SH1 is used by another school on Mondays and Thursdays from the 6th to 8th periods and on Friday mornings.
1.Select SH1 in the list of the rooms by clicking on it.
2.Click on the button <Time requests>..
3.Click on the <-3> button.
4.Select the periods in which you wish to block the room by marking them while holding the left mouse button pressed.
The time request -3 blocks the room completely, i.e. optimisation will not schedule lessons in room SH1 during the times specified.