simpler code block for repetitive actions?

I have a code that is really long (its for part of a cutscene) and I was wondering if it could be made into a smaller block of code, which would take up less space and could help me with some cutscenes in the future.

After "Wait 4 seconds" action create this sub-event:

System Repeat 10 times
... Wait 0.1*loopindex
... Spawn projectile

thank you! it worked perfectly