Is it possible to set up a campaign on demiplane and use roll20 to play it.
for example I setup a pathfinder 2 ed campaign using the Hellbreakers Adventure path and since Hellbreakers is not yet available in roll20 can link the demiplane campaign to roll20?
I’m not sure I’m fully understanding the question here. At the moment there’s not a way to import the content of an adventure path from Demiplane into Roll20. We are hard at work on the VTT Companion for the Hellbreakers Adventure Path however which will provide the maps and tokens for the NPCs in Roll20. That said if you want to save the maps we provide in the Demiplane conversion and upload them to Roll20 yourself that might be a short term workaround while we finish the VTT Companion.