Row 66 of Slip Stitch Chart
You only want to do the decrease at the outside edges of each of the 14 wedges. On the inner reps of the pattern (between the black lines) knit those stitches.
This should give you 3 reps of the 8 st pattern for a wedge total of 24 sts.
I originally had the decreases a row below (in error) and didn’t catch that when I moved them in (per test knitter’s notes) that that placed the last set within the black rep lines. Sorry bout that.