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How do i make a NPC that looks like a noob (example)
and when someone whit account name -_Soulhunter_-
says "add peterpan to auctioneer" the one whit account name peterpan gets a auctioneer tag?

I think the command is addguildmember
but it's P2P only so unless youi plan on putting up on a p2p server, don't even bother with it since it doesn't work at all offline

not name ,account name

yeah only works on p2p and I think it uses npc server