so you wan to have the zoom already on the start of the scene?
than you have to use & to all happening on the begining of the scene.
Also it is matter of what you are used to but making such long lines using AND is big source of mistakes you will not be able to find them if you make there one mystypo…
you can have the same efect using & and having shorter lines which are easier to check if mistake happens or change if needed
all with & will happen with @ under it
so if you want to have the zoom on the begining of the scene
BACKGROUND
&zoom on ### to ### in 0
&CHARACTER1 spot # AND CHARACTER1 moves to layer ###
&CHARACTER2 spot # AND CHARACTER2 moves to layer ###
@CHARACTER3 spot # AND CHARACTER3 moves to layer ###
@CHARACTER1 walks to spot ######