Creating a society-based campaign?

Is it possible to run a society-based campaign on roll20? Like where you can have players populate the game 24/7 and GMs pop-in to run one-shot adventures? 

It's entirely possible, but chances are you'll need a third party means of communication and organization beyond Roll20, and GMs would need their own tables. There's several that exist, but nearly all of them use off-site means of organization, from RunnerHub, to Chiyo. It also generally requires some oversight to ensure everyone is on the same page, using the same rules, and the same baseline assumptions.

Oh ok. Thanks. I was hoping it would be possible all on Roll20. 

When you create a Game on Roll20, it is open to Creator, GM's, and Players, 24 / 7. If you promote some Co-GM's, a Co-GM can create Pages (maps). It is possible to "Split the party" (different players viewing different Pages). But if there are to be multiple one-shot games running at the same time , it would work best to create multiple Games (tabletops). Each game has only one text chat room, and only one set of Voice/Video displays, so everyone would be talking at the same time if multiple groups were playing in the same Game at the same time. Wiki, <a href="https://wiki.roll20.net/Main_Page" rel="nofollow">https://wiki.roll20.net/Main_Page</a>

How can I make it possible to make it so different players can see different maps?

Yanojr said: How can I make it possible to make it so different players can see different maps? Use the "Split the Party" method. It requires the Players to be logged-in at the time, so the GM can drag-drop each Player individually to map Page that's different from where the Player Ribbon is located. Wiki docs, <a href="https://wiki.roll20.net/Page_Toolbar#Split_the_Par" rel="nofollow">https://wiki.roll20.net/Page_Toolbar#Split_the_Par</a>...

Also, is there a way to have multiple GMs to log into the same campaign and run said campaign? Can they run the same campaign individually even when the main GM isn't there? Thanks.

William L. said: Also, is there a way to have multiple GMs to log into the same campaign and run said campaign? Can they run the same campaign individually even when the main GM isn't there? Thanks. Yes, the Creator GM should promote them to Co-GM, to allow that. <a href="https://wiki.roll20.net/Game_Management#Players" rel="nofollow">https://wiki.roll20.net/Game_Management#Players</a>