Muting people only in one channel as a Admin

I would like a feature of muting people only in specific channels. That means i can mute the user only in a channel he is in not the whole server like you can do with Server Mute. I would like this feature because for instance we are hosting  a beatbox battle. We have a channel for the battle and the users are automatically muted when they join, if they are preforming we unmute them and  the performance there is currently no way of muting them back in the channel they are currently in the only option right now is to move them away to a different channel and then moving them back so they will be muted again only in that channel.

This is the way you have to do it right now: