One more thing for designing test chambers, if I want to, and i've seen it done before, is it able to make test chambers move while you are in them? If yes, how? KERMITCAKE! Okay, actually two. The second one is, does anyone know how to make that gel in maps that acts like a faith plate? It would be great help knowing.

For the moving chambers, they probably used a func_movelinear with the appropriate models parented to it (Track model, holder, beams and conecters between the beams and tracks). For the gel, do you mean like the one used in stylechanger underground? Just look for the gel model for PTI in the browser I think, and make the trigger_catapult logic without making the gel do any animations that it doesn't have anyways.

I would suggest to create an illusion of moving chambers. If you are sure that you are all the time in the same chamber, let the rest outside move. There are reasons why it's not very good to move the world you actually want to use as testchamber.
Use func_tracktrain and make them loop or something like that.

For example: 'sp_a4_stop_the_box'.