[Powerhouse]

Should be similar to the hard buttons (I've programmed all the number "soft buttons" to work in Kodi), but just in case you missed these...

https://support.myharmony.com/en-us/cust...tes-screen

https://support.myharmony.com/en-us/crea...-sequences

https://support.myharmony.com/en-us/cust...armony-app

Perhaps you can give an example of exactly what on-screen button you want to program.