Easy method to assign positions in buildings:
Put this in the soldiers init:
123839 = building identifier number - max zoom in on the Editor, press the ID's button.
this setPos ((position this nearestObject 123839) buildingPos 4);
4 = building position - you will have to figure out where these are.
If you go into a building as a squad leader and press space - you get lines to building positions as you move the cursor around.
If you want to make them keep standing up - best on balconies etc:
this setUnitPos "Up";