you should be able to pull creatures and items from the compendium that are exclusive to various modules for D&D 5e

So as of right now you can only pull creatures/items from the main rule books but I found that lets say if I want to pull the tyrannosaurus zombie from tomb of annihilation adventure witch I own, I can't. If I want to add it I have to put it in on my own witch is time consuming, so we should be allowed to pull creatures and items from any adventure we own but as of right now we can't, should be a easy thing to implement.   

If you own an adventure on Roll20, then you would have access to those monsters in that source book.

Oginme said: If you own an adventure on Roll20, then you would have access to those monsters in that source book. Yes, but in many cases you can only use them within that adventure, alternatively drag them over via the Transmogrifier 

Many of the adventures were released on Roll20 prior to many of the current quality-of-life things we now take for granted. Newer adventures do include monsters and such as compendium content. Older adventures don't and haven't been updated with new QoL items. You can check to see what each item includes on it's own marketplace page. For instance, Wild Beyond the Witchlight includes the following line to show that it has Compendium items enabled: Compendium You can access all of the rules, items, and creatures from The Wild Beyond the Witchlight in the in-app compendium, as well as on the Roll20 web compendium. For older modules, Transmogrifier (a Pro perk) is your best way to move NPCs and monsters between games.