How to play hotseat on one machine?

OK have the Battle Of Normandy module 2.0
I can load up the scenario no problem looks great!!

Question how do I play so I can move all the units for both sides. Both players are playing on the one CPU. It seems you can only play as one side and then I load up the save game I can’t seem to figure out how to change sides. Is there a way to play both sides at once in essence without saving the game.

ok figured it out !! Silly me. Just switch sides button.