I'm pretty sure this isn't possible but I'm a newbie with LR, so I thought I'd ask.
I purchased a couple packages of different types of presets for LR. In order to keep things organized, I'd like to use nested folders. Let's say I purchased a package called "A", and it has some presets to mimic color film, some to mimic black and white, etc. Currently, it appears that I can either set up one folder to hold ALL the presets from "A", or I can do individual folders for the preset "families" - so I'd have folders like this:
A - Color Film Presets
A - Black and White Film Presets
A - Retro Camera Presets
What I'd really like to do is have a folder called "A", then individual folders under that called "Color Film Presets", "Black and White Film Presets", and "Retro Camera Presets". If/when I purchase more packages of presets, this will allow me to keep them organized pretty easily and won't make the "Presets" panel overwhelming with content.
While you can create a hierarchy of nested preset folders using the Finder / File Explorer, LR will present them all as top-level folders. E.g. if you make A/ColorFilm, A/BlackAndWhite, B/Retro, and B/Basic, in LR you'd see ColorFilm, BlackAndWhite, Retro, and Basic all at the top level.