List of server commands/group
From Vintage Story Wiki
/group [create|disband|rename|invite|acceptinvite|leave|list|info|kick|op|deop]
Create/manage or destroy a player group. Player groups currently only serve the function of offering a seperate channel to chat in in addition to granting access to claimed areas./group create [groupname]
Creates a new player group, own chat channel. While in the this group's chat channel:/group invite [group] [playername]
Invites a player to this group/group acceptinvite [groupname]
Accept an invite to join the group/group leave [group]
Leaves this player group./group list
Lists all groups you are currently in./group info [groupname]
Lists the players of a group./group rename [oldgroupname] [newgroupname]
Renames the group./group kick [group] [playername]
Removes a player from the group./group op [group] [playername]
Grants operator status to this player, which allows them to invite other players./group deop [group] [playername]
Revokes operator status from this player./group disband [group]
Destroy a player group. Must be owner to perform this command.