[SoFahim]

I saw some server have like Surename kicking system. As like, I am owner of Alex_Smith. If anyone want to join in the server, as ****_Smith , He will kick out . I want to make same system Like this. Can anyone help me about that.
I have tried to find in everywhere in this forum. But cannot seen. Would you please help me for it?

And also If i use a cmd or something else to make a surename , Even the registration system!