ReWire, Controller, and Sample Editor Inspector

All of a sudden ReWire disappears in Devices menu. Sample Editor Inspector and the Controller cannot be found. I may have accidentally deactivated them and I can’t seem to find info on how to reactivate them. I am a newbie. I am still learning my way around the DAW. I am running out of time as my project is on hold. Can someone show me how to bring them back? Thanx in advance.