The key folder for me is the POSES folder. Character INJ, MATs and MORs wind up here. So my key folders here are CHARS, FACES, HAIR, and POSES. CHARS gets sub-folders CHAR-A3, CHAR-SP3, etc. FACES are for the generous solo FACE INJs. HAIR contains all the Hair Mats by name POSES for Pose sets only. As stated POSER sorts alphabetically and the flyout menu responds to keypresses so its easy for me to say, go to the flyout, select POSES, then tap "C" to drop me to the CHARS section, select the Character type (say A3) then in that menu scroll or if I know the character I want tap the letter of the name (say "N" for Nyoko). No mulitiple runtimes except my Poser 5 install on another Drive. It sounds messy, but works for me.

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)