Guild Wars 2

So only 50 can enter hologram, but if for example are 100 players, 50 enter and 50 do what? Or the other 50 can enter other room?

If I understood it correctly only 50 people can get the buff, that is necessary to deal damage, at once.

I think the 50 people limitation is not for hologram, but for Knights, and not for damage but for the color buff: only 50 people would get the color buff for one knight and once this number is reached, no other players can get it for that fight.

The 50 limit is per knight, everyone can join into holograms rooms.

The limit is 150 players on the map.

During the KNIGHTS event, only 50 players can get the buff for each knight. So if the maximum 150 players divide evenly across the 3 knights, everyone should be able to get the buff. (If you can’t get the buff, move to a different knight.)

During the HOLOGRAM event, there are no such limitations.