If a Group is in Automatic Setback and a single light fixture in the Group detects occupancy, the light fixture will illuminate at the default Setback Active Level of 100%.
If more than one light fixture in the Group detects occupancy, then the Group will exit Automatic Setback and transition to the Task Tune settings. Fixtures detecting occupancy will illuminate at the Task Tune Active Level while the remaining fixtures not detecting occupancy will transition from the Setback Level to the Task Tune Inactive Level.