When you want two or more lines to occur at the same time, the previous line(s) should start with & instead of @. For example:
#For when you want a character(s) to do animations/actions while a character talks
&ROWEN is animation
NARRATOR
Dialogue here.
OR
#For when you want multiple characters to do animations/actions at once
&ROWEN is animation
&CHARACTER 1 is animation
@.CHARACTER 2 is animation
I hope this helps.