Hey @markhoho, good to hear from you and thanks!
So, this is something we'd like to improve, but you can select multiple zones from the remote to run. You'd tap a zone, select the amount of time, and before hitting Run Now button, tap the zones drop down and select another zone you want to queue up. The remote will add up the watering times you've select and then run all of them when you hit run now.
At the moment we can't do exactly what you're saying, like select multiple zones and then selecting a time for all of them to run. You have to input the time for each zone, but they will run sequentially.
Hope that helps!