How to change Arc Menu icons?

Ok, getting Linux setup as Windows enshitiffication continues...I installed Arc Menu and it's almost perfect, but the app categories have mostly themed icons, just a few of them don't. Any way to change these last 5 icons on the far-left side?

EDIT: Solved. Took me longer to figure out than I want to admit, but in my case, those category icons were coming from Zorin OS's built in menu settings. So I launched the "Main Menu" from Arc Menu, which brings up Zorin's menu editor.

Then clicking on "Applications" shows the categories, at which point I could right-click on a category, then "properties" and click on the icon

The system icons are stored at /usr/share/icons -- browse to the right icon, select it and restart gnome (or log out and log back in)...everything is fixed. Hope this helps someone else save a bit of time down the road 🤷