This would be that for Foundry:
Example 2 (Permitted): Your gaming group plays two ongoing campaigns. You are the game-master for one campaign which meets on Wednesdays; for that campaign you host the Foundry Virtual Tabletop server which is accessible to everyone during the game session. On Saturdays your friend is the game-master and they host the Foundry Virtual Tabletop server using the same (shared) license key. Only one Foundry Virtual Tabletop game server is accessible at any given time. This usage is allowed with a single Foundry Virtual Tabletop license key.