The Right Angle Cross of Planning carries the same pair as the earlier Cross of Planning with sun and earth exchanged, Gate 9 and Gate 16. Human Design reads Gate 9, from Hexagram 9, Small Taming, sits in the Sacral centre and is read as the capacity to attend to the small details a larger idea depends on, now the more exposed gate; and Gate 16, from Hexagram 16, Enthusiasm, sits in the Throat and is read as a natural talent refined by repetition into real skill. It sits in the Right Angle family, the most populous of the three, and Human Design reads that family as steered chiefly by personal choice.
Its design half is Gate 40 and Gate 37, the two ends of one channel, Community, also exchanged in order. Gate 40 sits in the Heart, or Will, centre and is read as the willpower to work, held against a real need for aloneness and rest. Gate 37 sits in the Solar Plexus and is read as the warmth of family and friendship, specifically the bargain that holds a household together.
Putting attention to detail ahead of skill changes what this cross puts forward first, while the same willed aloneness and domestic bargain, one whole channel, sit beneath it regardless of order. The hexagrams are ancient; assembling four of them into one personal cross is the modern system's own construction, dated to 1987.