Hold onto your hats 🤠 There’s a new setting in CustomMap: Breakdown USE Shift List By Row
This means you can group shifts in the USE Shift List by their calendar row without needing developers to step in.

Note, for sites that already have custom Shift List sorting via LegacyCustomMap::setCustomUSEShiftDropDown this will override any settings in that.

Breakdown USE Shift List By Row setting can be found in the Grid/Calendar View category in CustomMap