@tomp - yes this can be easily with two single pole single throw SPST relays that can power the second valve for just zones 5 and 6. I’ll go find an older post that showed an example of this.
One could use the master valve setting, but the hose would be fully pressurized whenever the Rachio ran any other zone. Many hoses aren’t rated to handle pressure 24 hours a day.
The valves will need to be 24 VAC - not latching DC type.
