How to Import and Organize Multiple Brushes & SubTools
(a) When I came up with this idea Clip Studio Paint didn´t had the Quick Access floating menu (WINDOW - QUICK ACCESS), this new feature can be used to create custom collectors of your favorite tools - yet not so visual like my solution.
(b) this is only applicable if you have/need a big number of tools installed on the program. Nowadays I rely mostly on the default tools with slightly modifications. So a simpler workflow like this (video below) would work:
Now you can spend some time organizing your sets and tagging them for a next round of painting.
You can try some crazy ASCII characters to add symbols or empty spaces (Alt+255) or you can create wider gaps between categories, using a Brush Tip with the same color of the UI (dark green, eg).