Multi Actions
The Stream Deck application has a built-in feature called 'Multi Action' which allows a single key press to trigger multiple actions simultaneously.
Examples
Volume and Brightness
If you wanted to set all players in a group to the maximum brightness and volume, simply add both actions to a multi action.

Multiple Projects
If you wanted to perform the same action across multiple projects and/or groups, you can drag the same action into a multi action several times, each with their own configuration.
