@Krys - I'm going to have to say that that is several different actions. Creating a demiplane, sealing it off from everything else, moving an entire population there, and affecting the memory of other living things are all separate actions. You can create a place for the fae to slip away to and let them know about it if you like as one action, but it wouldn't be sealed off from anything else necessarily at this point. If you want to do that, give me a description of what sort of place you are making!