How can you make the Lenovo "utility button" behave like a normal back button?

I recently purchased a Lenovo Go wireless mouse, because I specifically wanted to avoid having to use a USB-C-to-USB-A dongle with my laptop. This mouse is one of the few mice I am aware which is using a USB-C wireless receiver instead of a traditional USB-A one, which felt kind of nice. Now, there is only one major problem: the mouse has a particularly odd utility button on its left side (described in the Setup Poster mentioned on the previous link; direct link: https://download.lenovo.com/consumer/options/sp41c21213.pdf ). This button makes it possible to do all kinds of things like back, fo

Question by Per Lundberg on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.