To add a member, tap a member’s name, select Edit Roles, select the role you just created, then tap Save. Repeat this process for everyone who can access the channel you want to lock.
If you don’t want anyone to be able to read or type on the channel, tap the red “X” next to Read Messages, Send Messages, and Send TTS Messages. To allow users to read the channel but not interact, tap the Xs next to Send Messages and Send TTS Messages, but leave Read Messages on (its check mark should be green).
