Click the button to enter selection mode, from selection mode click on choosers that will be affected.
Note: all selected choosers must be in the same collection, to change more than one chooser collection in a single automation you can add multiple Change Chooser steps.
How to modify the Choosers.
Cycle Previous/Next will rotate the current option in order, looping around the start or end.
Change To... will show the Change To option to select an option to set all choosers to.
Click the button to open a popup where you can pick which chooser option, Choosers will change to this when the automation runs.
Note: you must select one or more choosers in the Choosers setting above first.