Property sheet metal drawing view

Hello

As I don't do sheet metal work very much, I come up against a problem that is probably very simple. I have a problem in activating some properties of the drawing views. Why are some of them inactive, especially the display of bend notes?

I should point out that I made two different designs, either directly with the sheet metal module, or with a classic solid design that was then converted into sheet metal. Both lead me to the same annoyance.

I am attaching a small explanatory document to be clearer.

Thank you and have a good day


pb_mise_en_plan_tolerie.pdf

Hello

When you click on the unfolded view and go to the tree on the left, there should also be options that you can enable or not. 

This is what I did and I explain it in the attached document. The options are grayed out, so they are inactive. I can see the line "show folding notes" which is not checked but it is not accessible. That's where my problem lies.

I have this problem when there is an unfold in the room, insert==>sheet metal then unfolded and there in this configuration we have no  access. Otherwise you have already restarted your station??