I am also in need of this feature. I was hoping it would be as easy as just grouping stations together when setting up a program and they would act as one zone, but that does not appear to be the case. I have 20 zones, 18 of which run off of a well. I had to add a pressure tank in order to add some well fed water spigots in our garden, so now it would be much more ideal if I could combine zones in order to minimize well cycling as much as possible. Pairing zones would likely eliminate the cycling almost entirely, but having the ability to still only turn one on at a time is preferred, so wiring them together is not a solution I want to have to go with. Not to mention, finding the right zones to pair would be much more convenient if it was able to be done in the software.