One simple question is there a command within the scene making tab to make an actor within the scene disappear? Along the lines of Daedra appearing or reappearing within the game world. Is there also a way to make an NPC actor disappear from the game world all together?

I'd actually want to know this too.

It depends on if you ever want them to make a reappearance. If yes, one method is to make a small inaccessible holding cell, and use MoveTo to move them to that cell. If no, then you could use Disable (and then possibly also Delete) on them.

How do I use this "Disable" command? Is it part of the character or quest scripting? or is it in his Ai packages or Scene scripting? Also thank you for answering 2 of my questions now. I really do appreiciate it.

http://www.creationkit.com/Disable_-_ObjectReference can be called on ObjectReferences, so the actor in this case. You could have the command in any of a variety of places--as a script in the scene itself, or in a package fragment script that happens at the end of an AI package, etc.

Ah thank you. I'll look into using it to avoid any mod NPCs bumbling around the game world with nothing to do. Thank you so much for your help.