How do i make a "Team Addon"

i saw that there was a Team Addons option while i was checking my addons, and i was wondering about how do i make one.
does the feature actually work? or is it bugged
Team Addons are addons that add two characters as a team (like Sonic and Tails) An Example of this is BuddyEX which adds Team Sonic as an option I know I said two characters but this is an exception for Team Addons for a more Two Character thing There is Neon Characters which adds two teams (Neon Sonic and Tails) and (Neon Knuckles and Amy)
 
this is the text i see on the page
You are not a member of any resource teams.
im still quite confused on what this could mean
May i ask where are you getting that information from? i have never seen a "coop Modding" thing in Srb2WS other than from Roblox Studio itself, which allows to create a private server where 2 or more users can start building on the same map at the same time.
 
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