(LM 19.3 Tricia Cinnamon)
This is my second time asking for help here... if you missed the first one, I'm a Win7 refugee and WinX refuse-nik who is a Linux newbie but really excited to be here in this wonderful community. Thanks again for putting up with me!

I have a 3-button generic scroll wheel mouse; wife uses a 5-button scroll wheel mouse. When I call up the "Mouse and Touchpad" app included with LM it doesn't have any sort of mapping function to assign actions to the buttons. I opened up the Driver Manager and couldn't find a way to search for the proper driver for it. The left and right click buttons are working fine and the wheel scrolls on web pages and documents but the other buttons are all dead in Linux.
So I did some web searches and I found an old reference to a piece of software for Linux called BTNX which sounded like what I need... but the software was written in 2008 and there's no version of it to be found today on the Software Manager. I read a bunch of articles about people having trouble configuring it (as recently as 2014!) including long lists of (to me) incomprehensible terminal commands. I'm afraid to try it.
What I'd really like is simply to find a simple driver or app that will allow me to use and configure all our mouse buttons. I'd like to be able to get it from our Software Manager or Driver Manager so that it won't mess up my system too. And while I'm add it, I'd like it to weed my flower beds and improve my gas mileage. Am I asking too much?

Thanks in advance for any advice you can offer!
- = HM = -