Added a block of static IPs to my gigapower account last night; now a tech is coming out?

I did a live chat session with AT&T last night to get a block of static IPs for my gigapower service. They said I'd receive an email with those IPs (or at least, that's what I understood) but this morning I got an email saying that a tech is coming out to install my new services.

That just seems weird because I can't imagine that it's necessary for a technician to come out and touch any of the equipment just to provision the static IPs. What's more, I can't imagine that the tech will be willing (nor trained) to configure those IPs on my router (Ubiquiti EdgeRouter). I had fully expected to do that myself, but I'm happy to let the technician mess with the AT&T equipment while I work from home from my WiFi hotspot.

Is this correct that it's necessary for a technician to come out for me to get static IPs? If so, what exactly is the scope of the work they will be performing? Will they actually set up my router for me and assign it one of my static IPs?

Or is it possible to just set this up myself? I feel quite confident in my ability to do so.