Another nice feature of Mumble 1.2.x is Access Tokens. These are what you could call passwords; basically, if you have a token that is the same name as the channel's ACL Access Token group, you can enter the channel. Think of Access Tokens as groups where you can add yourself to the group if you know the "password" (token).
- Go to Server -> Access Tokens and add a token.
- Add an ACL for a channel you want to give permissions to. Do exactly the same as you would with a normal ACL, but when you assign a group for the ACL, type #TOKEN_NAME (TOKEN_NAME being the name of the token that you added in the above step).
- Now each individual user can click themselves, click Server -> Access Tokens, and add the tokens for the channels they want to enter. Remember, channel owners should only give out the token name to those they want to enter their channel, and it is best to pick a unique, hard-to-guess name for your token.