Locate the rivet
Look at the ends of the suspender straps, note the metal rivet on the back of the leather connector part. The metal rivet keeps the ends of the leather together, creating a space for the attachment part to fit in.
Wiggle it open
To get started, gently wiggle open the leather cover to reveal the space where the attachment part sits.
Slide on the new end
Now, slide off the current attachment part from the leather connector. Next, introduce the new attachment style you prefer and slide it into the designated space. Lastly, close the leather end by aligning the metal rivet with its original position. Give it a gentle push until the metal rivet pops out again.