How can one select stairs and thresholds again after first selecting none in EUFY clean app (S2)

I have an Eufy Omni S2 and with the setup I selected No stairs and No threshold. I have full plans of my 1st floor and now I want my 2nd floor setup, however, this has thresholds and stairs. How do I change this setting, I can not find it anymore in the Eufy app