is this possible ? (usergroup)

[sulasno]

I want to create a usergroup known as "brawlers"

members of this usergroup can see all posts; members who are not in this usergroup cannot see brawler's posts; in other words, brawler's posts are hidden from the rest of members

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this is actually what I hope to accomplished;

creating a usergroup call "brawlers"

template edit
for posts created by members who belong to this usergroup, do not display thread unless viewer belongs to usergroup bralwers, admins, mods