How to 'mod' someone on Twitch, and appoint them as a moderator for your channel

To mod someone on Twitch, you can use either the /mod command, or open the user's profile inside your chatroom.
EarlyGame on MSN

Twitch's New Co-Streaming Feature Could Be A Game Changer

Twitch is preparing to roll out a new co-streaming feature that could change how esports broadcasts are measured. While the ...