Programming a base, pi imager wont allow customization settings

Hello, in the process of programming my base. I’ve downloaded the rtk base image (2-6-1-1) for my pi 3b, but the pi imager i’ve downloaded (v2.0.6) wont let me choose any customization for base name, wifi settings etc, the option is greyed out. does anyone have a fix or work around? thanks

You can use the Pi Imager to install a base OS with customizations. Afterwards you can install rtkbase with a handfull of SSH commands.

I was able to get it figured, i was able to download a version of the pi imager that allowed the customisations. Got the station all setup and getting strong signals!