Oh, the Hollywood VFX footage.
There's a lot more to making ANY kind of portal in After Effects, even if we were able to look into your mind to figure out the variety you want to make.
I STRONGLY recommend you spend a lot of quality time here:
Learning to use a video editing application is like learning how to drive a car.
Learning to use After Effects is more like learning how to become an ace fighter pilot flying the F-22 Raptor.
Right click on your columns (where it says "source name, parent,#,etc...") go to the columns fly-out and enable "modes".
This type of thing is often left out of even the basic tutorials. Then go to the bottom left (the 3 little icons) and expand your layer switches and transfer controls.
I can't find those can you please provide a picture?
Thanks so much man
Glad you found it.