Fibaro FGS-223 dual relay driver with children please

Set the FGS-223 to use the "Device" type. You will then have buttons to delete child devices, etc.

Once you are done with that, look at:

And install the EricM version of the driver and child. (Two driver adds.)

https://raw.githubusercontent.com/erocm123/Hubitat/master/Drivers/metering-switch-child-device.src/metering-switch-child-device.groovy

and

https://raw.githubusercontent.com/erocm123/Hubitat/master/Drivers/fibaro-double-switch-2-fgs-223.src/fibaro-double-switch-2-fgs-223.groovy

Apparently I've had those drivers on my development hub for a while and they got selected. Swap that Device driver for the new one and click Save Preferences. Two child devices (that work) are created.