Users own web community

[Kungfu]

Like how yahoo has i think it is. You have groups with similar interest. Id like to put something like this on my forums. I found this

https://vborg.vbsupport.ru/showthread.php?t=91903

But is there one is almost like that but say a member starts a community and it has a webpage, people then have to join and the user who started the group can accept or deny members etc...