Imagine you have drawn, in one layer, a tree on the left side and a dog on the right. Now you want to switch so the tree is on the right. Is there a way to do that? Or can you only transform an entire layer?
Quick answer, no.
but there's a good workaround.
if your dog and tree do not touch, you can:
If you want to simply flop the layer, you can flip it horizontally, but your illustration will be backwards (doesn't work with text. Also won't work if you want an 'inward facing' dog to move to the opposite side of the frame, but face the same direction)