You can make the "base" memory with you 2 box or 4 box.
Then you could make 4 other memories (2 for the 2 box) where you make each of the boxes full screen but leaving the others in the small position. with the full screen also make sure you set the key priority accordingly as well.
Then you can use the EFF Dissolve feature to be able make them move from the base memory to these other memory positions.
Les
#Vision