I'm making a subtle horror short and I want to insert spooky effects and words and things on certain numbered frames, and it would save me billions of hours if I could somehow say "select every 13th frame and insert this. Or if that's not a thing, a way to create said spooky frame and automatically paste it to every 13th frame. Does that make sense? I'm also super open to other methods to do what I'm trying to do. Thanks in advance!
If it matters, I'm using the latest version of 20 on Windows 11.