Before you ask, I’ve read @Dara.Amarie’s incredibly detailed and helpful post about Animating Overlays but unfortunately most of it still went way over my head. I’m still having trouble understanding the whole anchor points stuff, how you figure out which anchor point is which considering it doesn’t show up in the portal, and believe I’ve TRIED working it out on my own.
To no avail.
So … how do rotating overlays work? How do you make an overlay rotate in place so that it’s spinning? Any help? 
If you mean that you want the overlay to spin itself then here’s an example:
@overlay FIREBALL rotates 360 anchor point 0.5 0.5 in 4
This means that the FIREBALL will spin 1 time at anchor point 0.5 0.5 in 4 seconds. The anchor point 0.5 0.5 is important if you want to spin the overlay around itself. If you want it to rotate more than 1 time, then add another 360. It could be 720 or as much as you like.
I hope that helped.
Thanks! I’ll try it out and let you know how it goes
I do realize someone gave you an answer. Just incase that doesn’t help you.
I’m assuming you’re a visual learner.
try this tutorial…might be easier to understand:
Thanks a lot! I didn’t realize I was a visual learner so that was quite the eye-opener.
No problem.
I’m the same way.
Videos and pictures is a must.
Marked as solved and closed. Thanks!