What Version of 3.xx are you running?
Click on "View" in the ribbon bar and under "Spectrum" you should see "Band Plan".
I believe this was added over a year ago? Current version (Public Beta Version) is
3.1 dated March 18th, 2022, Build 2547:

https://www.sdr-radio.com/download
Scroll down just beyond Simon's World Map download (another awesome piece of software BTW) and the Beta
version download is on the left.

73 Kriss KA1GJU