MS Keyboard Layout Creator can not assign those keys, but only characters and dead keys. AFAIK kbdedit.com will allow you to create such a custom Windows keyboard layout _with_ arrow keys. I currently use Autohotkey for that. You can have a look at my script and see how I assign the CapsLock key as a modifier key and in my case (Vim-like) hjkl-keys as arrow keys. The source is here:... Source: over 1 year ago

It looks like this competes with Mos.app[0]. Honestly, I'm not sure how folks use non-magic mice without this. [0]: https://mos.caldis.me. - Source: Hacker News / 11 months ago

Not to take away from this app, but I’ve been using Mos (https://mos.caldis.me) for a couple of years now and it’s been just enough to mitigate the faults I had with default mouse settings in macOS. - Source: Hacker News / 12 months ago

I recommend MOS to fix the scrolling issue. It also adds a sexy-as-$uck smooth scrolling animation. Source: about 1 year ago

You’ll need a mouse Utility to fix it. If it’s just scrolling, MOS does the job, and when you’re not gaming, gives you such a smooth scroll, it’ll feel better than sex. Source: about 1 year ago

About smooth scrolling, on Mac I used MOS but nowadays I use LinearMouse. Maybe you can get something similar with KensingtonWorks or other app. Source: about 1 year ago