Put the rear derailleur in the lowest cog. Peel off the adhesive tape. Lay it flat. Leave at least 2 cm between the derailleur and the inner surface of the Branchy blade. Sit on the bike and check.
Adjust it
Start clamping it. Ensure that the inner edge of the Branchy blade is vertically aligned.
Check and Go
Make sure that the Branchy is not touching the chain line or wheel. Tighten firmly and trim the clamps. Check regularly.