Somfy RFY blinds

I have a Somfy RFY blind, with:

ID 0 00 01
And Unit Code 1

I have the rfxtrx integration installed, which has automatically created a number of devices within HA
However, I believe that the somfy blinds have to be created manually in configuration.yaml?

However, because the rfxtrx integration was added via the UI, it does not seem to have a section in any of the yaml files - so I am unsure how to proceed in adding the blinds to the system

Any ideas?