You set the ones on F-01406C after you put in the seat belt lug. See step 7 on page 30-06 (12x ...3-3.5). You set the ones on F-01406 L and R in step 3 on page 30-07. They want you to delay setting them so you can set them according to their rivet direction in Figure 1 - to prevent pillowing of the skin.
Thanks Mark, for the life of me I couldn't pick up when they should be set.
Couldn't see why they couldn't be set just wary after getting ahead a couple of times only to find I had to undo the work.