Thank you for your comments and help.
Ozzy, you are spot on ! I hadn't looked so closely to the sketch, and yes you are totally right, we can see the position of CP9 (as well as the sketch 4.15 page 43 btw
Regarding the 1 or 2 bolts attach point, I think 1 is OK here in Sweden, but it is good to know how to make it a 2 bots attach point if necessary in the future. So thank you for that too.