I'm not sure about the Tiles thing; can you explain a bit more about that issue? (Note that all images are accessed via the Assets button now and any images in modules are accessible from assets > images. Also if those Tiles are in a module you'll need to copy over the module into the Unity modules folder). Any options you had set should have carried over from your campaign - provided that you copied over the whole campaign file. Options are stored in the campaign database. And since they're the same in Unity as in Classic then they should be the same. If you are using any extensions of course then that could change things if either you didn't also copy over the extension or if the extension doesn't work with Unity.

With tokens on the map you'll see a toolbar at the top of the map and one of the options is to lock token movement. So with that locked you can approve moves just as in Classic - if that is what you are meaning.

Some reading for you:
https://fantasygroundsunity.atlassia...ages+as+the+GM
https://fantasygroundsunity.atlassia...layer+Movement