I'd be interested as well. I've got two on each side of my Duplex. There should be a vid just on all the buckles and tabs on the frame.
The two buckles on the duplex are for if you plan on using just the frame for a load hauler. They are needed to attach the frame to the belt. Its the strap that goes from the belt to the bag, that strap would instead be attached to the frame using those buckles. So not entirely necessary if you dont plan on using the duplex frame for a hauler.
Makes sense. Thanks. I watched the vid and that answered a few questions. There's just so many options and it's my first Kifaru, so I'm at the start of the learning curve.