How to set up compendium sharing

I am running LMoP and have just purchased the Players Handbook from Roll20 and i want to set it so that i can share it with my players. When i tried by going under game settings and switching it from No to Yes all it put there in my slots was the Adventure LMoP and i wasnt able to switch it to the Players Handbook. So how do i make it the players handbook and not the Adventure LMoP? Thanks for the help.

The adventure refers to the game under which you are sharing compendium content. In other words, you don't choose which compendiums to share, you choose which games you wish to have access to all purchased compendiums. All players in your LMoP game should have access to the PHB.

Awesome Thanks. Sorry if this seemed like a silly question.

No worries. Not a silly question at all.