Making missions in the editor show up in game.
 

I know this has probably been asked a million times, but how do I make missions generated in the editor show up in game ? I'm not asking you to go step by step, but rather I'm asking for a friendly finger point in the right direction(s)

I'm new to the game and to the forums, so please be weary of my lack of navigation skills to the site.
Thank you graciously for any help!

Q