Hunting group
From MHWiki
The hunting group is a list of a player's friends who have added the MouseHunt application.
When a player sounds the Hunter's Horn, members of that player's hunting group who are in the same location will be brought along for the hunt if their status is "Ready to Hunt."
Note: If a player fails to claim a King's Reward when it is offered he/she will lose their "Ready To Hunt" status. Trap checks will continue to occur but he/she will no longer participate in hunts by other members of his/her hunting group.