Struggling to Load My Black+Decker Manual Staple Gun - Any Tips?

Hey everyone, I recently got a a Black+Decker manual staple gun for some home projects, and I'm having a bit of trouble figuring out how to load the staples properly. The instructions aren't super clear, and I don't want to damage anything. Has anyone used one of these before and can offer some guidance on the correct way to load it? A step-by-step explanation or even a quick video link would be incredibly helpful! Thanks in advance for your help!