Tactical Tailor Modular Operator Pack: help add a quick release please

I have aTactical Tailor Modular Operator Pack, that I’m scratching my head on how to add a quick-release to it to the shoulder strap closest to the waist

quick Google Image that I found was something like this with a paracord/shock cord to pull and it would release

this interest me also, but it seems/appears I need to do some sewing

thanks