multiplaine

in Animate 2, is multiplaine the only way for scene set-up, or can you create 3D scenery?

if you mean rotating planes, that is only for aninmate pro

what if you want to make a 3D building in animate 2, how would you do that?

The ability to rotate planes is only for the pro version, so you would just draw it. You can’t have 3d objects in standard animate.