Guild Wars 2

I have been playing very infrequently and I managed to miss some sort of change that enabled assigning stats to equipment, or so the prompt says.

I have no idea as to what this means and can’t seem to be able to differentiate as to what part of my stuff I can do this to.

any advice would be appreciated.

It means you have a piece of the old Magic Find gear. They did away with Magic Find on gear a while back and replaced it with account-bound MF. Somewhere your character has one or more pieces of armor, weapons or trinkets that used to have MF as one of the stats. You’ll need to hover over all your gear (don’t forget underwater gear as well) until you find one with no stats. Then click (or double-click, I can’t recall the exact process) on it to bring up a list of stats you can assign to it from.