A Group cue is a type of cue which contains other cues. The cues within the Group, called "child" cues, can be any type of cue including other Group cues, and will behave in one of several ways depending on the mode of the "parent" Group.
The default keyboard shortcut to create a group is ⌘0. If you create a Group cue while one or more other cues are selected, those cues will be placed inside the newly created Group. Once a group is created, it can be collapsed or expanded for visual simplicity using the gray disclosure arrow in the upper-left corner. Group cues behave exactly the same when whether they are collapsed or expanded.
When a Group cue is selected, the inspector shows three tabs: Basics, Triggers and Mode. Please refer to the section on the inspector to learn about the Basics and Triggers tabs of the inspector.
A Group cue can have one of four modes:
A Group in this mode has a blue outline with rounded corners.
When a Group set to this mode is triggered, the first child cue will start and the playhead will advance to the next child cue within the Group. When the last child cue is triggered, the playhead will advance to the first cue after the Group
You may have observed that this is not at all different from how the same list of cues would behave if there were no Group cue, and you'd be entirely correct. This mode is essentially an organizational tool to visually separate cues into different sections within the cue list, and to hide or show an entire batch of cues with a single click (on the grey disclosure arrow in the upper-left corner of the box).
A Group in this mode has a blue outline with square corners.
When a Group set to this mode is triggered, the first child cue will start, and the playhead will advance to the next cue after the Group. Therefore, other cues within this type of group will get skipped over unless they are connected with [auto-continues or auto-follows]((../getting-started/#the-cue-list). By using auto-follows and/or auto-continues, the child cues within the Group can be made into a cue sequence, which will progress independently of the playhead.
Since the playhead advances to the cue after the Group, you can continue to press GO, triggering cues and advancing the playhead, while the cues within the Group are running.
A Group in this mode has a green outline with square corners.
When a Group set to this mode is triggered, all child cues will start simultaneously and the playhead will advance to the next cue after the Group. Since child cues start simultaneously, the order of the child cues does not matter at all.
Using a start-all Group cue in conjunction with pre-waits is a great way to create a timeline-line sequence of events, all timed off of a single GO. You can learn more about this in the building cue sequences section of the documentation.
A Group in this mode has a purple outline with square corners.
When a Group set to this mode is triggered, a randomly selected child cue that is both armed and not currently playing will be triggered, and the playhead will advance to the first cue after the Group. Each armed cue within the Group will be triggered once before any of the cues is triggered a second time. This form of cueing is often referred to as "round robin" triggering.
Note: this is fairly different from the behavior of start-random Groups in QLab 3. If you have any questions about it, please don't hesitate to contact the support team and ask.
Group cues can become broken for the following reasons:
Fix the cue inside the Group, and the Group will be fixed as well.
You'll need to either install a Pro Audio or Pro Bundle license, or remove the timecode trigger from this cue.