Are you sure you want to turn on all zones at the same time? That’s likely to trip the power adapter because it won’t be able to deliver that much current to all zones. You can set a new program, or use run-once program. But if you want to turn all zones on at the same time you will have to set all zones to ‘parallel’ mode, in other words, turn off the ‘sequential’ flag. Then set a program that turns all of them on for a specific amount of time. That should do it.