Creating a new MIDI drum kit using my own .wavs

I’ve tried to do this on and off for years and can’t figure it out. Last time I was in the studio I recorded a “drum farm” and have a ton of .wav files of each drum ready to go, but I can’t figure out how to set up a user-made kit to essentially sample/trigger them as I would any of the pre-loaded kits.

https://youtu.be/7FD7oH6t56s?t=482