The embellishing ring has 2 holes drilled into it for fastening to the rear conical hub. The angled slots on the bottom edge of the ring will fit around the spokes when the wheel has been built.
Fit the ring onto the hub, ensuring that the slots line up well with the spokes and mark where the fixing holes are on the hub. Remove the finned ring and drill 2 holes into the hub in order that the screws supplied with the finned ring can be fastened through both the ring and the hub. Secure the bolts/screws with the nuts.