On the website I want to create a rule that if both my phone, and my wife's phone are outside the geofence, to turn off all the lights.
Unfortunately in the options I have to chose one device OR the other, I can't choose both.
I don't want the lights to turn off while the other person is still at home!
The work around I am looking at for you would be to add a same rule to her phone. You can't have 2 phone on the same rule, but you can have 2 phones with the same rule.
Please let us know if that resolves your issue.