Sequences can be set to 'Run' mode or 'Step' mode on the ColorSource Console.
Run mode runs through each step automatically once you activate the sequence, while Step mode requires you to press the bump button or lift the fader to execute the next step. By default, you will be in Run mode.
When in Run mode, your sequence bump button will be yellow. When in Step mode, the button will be blue.
To change which mode you are in, navigate to the Playback Toy section of Controls and tap the button below the desired sequence to change it between Run and Step.