I thought up some tips as i was playing works on house 101 and the 2nd
one best

1.   first of all gather everyone downstairs
then place a boo at the top  set his power on the highest you
can  and look on the list and go on commands  set it so that
he will only use  them if he sees a mortal

2 put a spider in the room where the stairs come down and set its
power so that the swarm
allover

3.place a  "shivers" in the living room  or dining
room then place the rest in wherever you think is necessary just only
leave them one choice ..... THE DOOR