Assigning VLAN IPs without changing ports?

Apologies if this seems like a dumb question.

I've got two VLANs (4.x and 5.x) added to my network. How do I go about assigning static IPs to devices I want on those networks without manually tracking down the port the devices are plugged into on the switch?

For example, if I have a camera on my current 3.x network and I want to move it to the 5.x network, is there a way to just change the static IP to something in that 5.x range without having to track down which port it's plugged into on the switch and changing he VLAN for that switch?

The reason I ask is that we have switches all throughout this network (slowly working on changing that, but it is what it is for the time being) and I won't be able to easily figure out which camera is plugged into which switch so that I can login to the switches to change those port VLANs.

Thanks!