How many HD licenses does FullHD consume in the tiered licensing system?
If a FullHD participant lacks 2.5 free licenses, they will connect in HD and consume one license. If only 0.5 license remains, they will connect in VGA and consume these 0.5 licenses. This logic applies to the tiered licensing system, not to port-based licensing. (The distributed package uses port-based licensing by default.)