Set up cameras after install?

I just purchased three security cameras for our second home property. I had the cameras sent directly to the guy that will be installing the cameras - they are hardwired. Is it possible to have him Install the cameras and I come along a week later and set up the cameras on my ring account? I read thru the install instructions and it sounds like I can scan the QR to connect to wifi and add to my account but then it mentions setting up before install. Possible? Thank you!