Elgato Stream Deck is easy to setup and use.
This article goes over the Actions that are available for use with Twitch.
Twitch - Instructional Video
Twitch - Select Account
For each Action associated with Twitch, you can use the Account menu to select your Twitch account.
You can enter your Twitch account(s) in the Stream Deck Preferences.
Twitch - Chat Message
Chat Message lets you send out one message to Twitch each time you press a key.
You can use the Message field to compose your message.
If you like, you can make a folder in Stream Deck that contains many different Actions - each one with a different message to whatever Twitch account you prefer.
Twitch - Viewers
Viewers lets you show how many people are viewing your current stream on Twitch.
A constantly changing number will be displayed on the key associated with that Action.
Twitch - Play Ad
Play Ad lets you play an advertisement your current Twitch stream.
You can choose the Duration of how many sections the advertisement will play.
Please Note: In the past, a Twitch partner account was required to use this action. However, starting with version 4.3.3 of the Stream Deck software, an affiliate account can also use this action.
Twitch - Stream Title / Game
Stream Title / Game lets you add a pre-determined Stream Title and/or Game to your Twitch stream.
Twitch - Sub Chat
Sub Chat lets you Turn On Subscriber-Only Chat and Turn Off Subscriber-Only Chat in your current Twitch stream.
If you have unrestricted chat, then this Action will immediately Turn On Subscriber-Only Chat.
If you have chat limited to subscribers, then this Action will immediately Turn Off Subscriber-Only Chat.
Twitch - Slow Chat
Slow Chat lets you Turn On Slow Chat and Turn Off Slow Chat in your current Twitch stream.
When you first create this Action, you can select a Duration in seconds:
If you have normal speed chat, then this Action will immediately Turn On Slow Chat for the selected Duration.
If you have slow chat on, then this Action will immediately Turn Off Slow Chat for the selected Duration.
Twitch - Followers Chat
Followers Chat lets you Turn On Followers Only Chat and Turn Off Followers Only Chat in your current Twitch stream.
If you have regular chat, then this Action will immediately Turn On Followers Only Chat.
If you have Followers Chat on, then this Action will immediately Turn Off Followers Only Chat.
Twitch - Emote Chat
Emote Chat lets you Turn On Emote Only Chat and Turn Off Emote Only Chat in your current Twitch stream.
If you have regular chat, then this Action will immediately Turn On Emote Only Chat.
If you have Emote Chat on, then this Action will immediately Turn Off Emote Only Chat.