I purchased both Short Adventures in the Roll20 marketplace, thinking I could use them in an upcoming game I am running.   However, as it turns out, I cannot load them into a created game, unless they are created as standalone adventures.   Unlike TYP adventures which can be loaded into any game.   Was this supposed to be this way, or am I experiencing some kind of error with my listing for Game Add-ons on the game page?     Please advise and thanks in advance!