If you want you can create a separate event sheet and 'include' it in all your others. You could call this event sheet "spawn" or something similar and in it have the event:
At start of layout
sub: Char Select = 1 - create object "Character 1" at XY
sub: Char Select = 2 - create object "Character 2" at XY
..
..
Family "Characters" On destroyed - restart layout
..
..
This would handle your respawning, provided that you want to restart the level when you die.
If you didn't want to restart the level from the start, say you had a checkpoint, you just redefine where you want to start:
Family "Characters" On destroyed
sub: Char Select = 1 - create object "Character 1" at checkpoint.XY
sub: Char Select = 2 - create object "Character 2" at checkpoint.XY
Best of luck