how do i tinker with membership tags?

I've been trying to figure out how to play around with Membership tags, you know the ones that show BC, TBC, and OBC on a leaderboard. I've been trying to customize this so players can get different tags. How in the world can I change the tags?

I may be wrong, but I think it is impossible. The tab is controlled by the Roblox scripts, not a user, and the only way to redo it would be to rewrite the whole leaderboard.