mute players

[awesome]

you should be able to mute people, unless you can and i dont see it 

[Broxzier]

Assign them a role without the chat permission. 

[awesome]

what if you arent an admin

[Deurklink]

32 minutes ago, awesome said:

what if you arent an admin

Then you should ask the admin for permissions to change someone's role. Or you should ask the admin to mute someone. Or you should become admin on your own server.