Adding a link to a bracelet

I recently picked up a Gen 1 Planet Ocean on a 1579 bracelet with pin and tube links. I need to add a link and have a question. There is a directional arrow on each link. The YouTube videos I have watched show tapping out the pin in the direction of the arrow and reinserting the pin in the opposite direction of the arrow. This seems counter intuitive to me. I would think you tap it out in the direction of the arrow and then tap it in the same way. What am I missing here? Don't want to screw something up. I know my Omega boutique would do this for me but I sure would like to figure this out.

I don't have that particular bracelet, but in other bracelets I've sized, the arrow is indicating which side of the link has a hole that is large enough for the pin to fit through.

It really doesn’t matter in my experience…