Can i get a little help scripting in game groups?

hello guys, first post here.

il get right to it, im making a pretty advanced MMORPG for Roblox, im doing all i can to learn as i go but some things i have seen seem impossible to find templates for, what i need here is help for a script or possibly series of scripts that allow a player to talk to an NPC and create a Group, Clan, Guild, (whatever you want to call it)

((IN GAME))

that the player can then Name and proceed to invite other players to. the reason i stress IN GAME the way i do is because everywhere i go looking for answers i only find making groups on the roblox main site and in no way has anything to do with what i need here.

i would like to just say that i have seen exactly what i need in this game by Crackop - https://www.roblox.com/games/2928055432/TOKENS-RPG-World

even the over head group name is there and i want that too. that pard seems pretty simple but i cant even do that until i have a working Guild/ Guild creation script and Gui to go with it.