Custom Binning - how to edit the bins?

[#1]

Wow, custom binning even works with dates, cool!

There is even a possibility to edit the binning. But: quite uncomfortable to type in the dates in seconds and to correct the labels manually.

What do I have to change in my workflow to be able to enter the "dates" in a usual format - and to get the labels adjusted automatically?

dt = Open( "$SAMPLE_DATA/Aircraft Incidents.jmp" );
dt << New Formula Column(
	Operation( Category( "Distributional" ), "Custom Binning" ),
	Columns( :Event Date )
);