BTT & newer Logi Options+?

There's apparently a fancy new Logi Options+; my MX Anywhere (3 I think?) doesn't have the ability to make click do another button number?

Also, doing Keyboard shortcut fur EG ctrlOptCmd-9 just comes up as 9 in the keyboard shortcut selection window? When I do sequence, it comes up as this:

I'm trying to make the back button emulate a 2F swipe left NEVERMIND the shortcut is escape I'll just bind that in Options+

I looked at this: