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Assign Phases
Touching the Assign Phases button
opens a popup box that allows you to reconfigure your Phases.

In the case of the Christie Lites Distro above, to implement their Phasing, it was necessary to use Add Circuit to add an additional 3 circuits to implement.
WARNING
If you create a Custom Pattern, don't forget to touch Apply Pattern to PD at the bottom left before touching Ok at the bottom right!