How can I group and control multiple identical lights together?
To enable fixture-linking, filter into the fixture display mode. Either tap the white fixture name above the faders in the main overview with all lights, or double-tap between fader name labels for this fixture.
A fixture toolbar will appear underneath the main app toolbar. Tap the fixture name in the middle to open the options view. Tap on "Linked" to choose from any other identical fixtures in your project. Tap on "Parameters" to choose which specific parameters to link together.