In a form I've 3 subgrids with N:N relation which point on the same entity (but don't display the same view).
When I create only 1 of theses subgrids, I've correctly the addbutton and I can add records in my subgrids.
But when I've more than 1 subgrid, the + button in each subgrids (and all the button like edit etc which are in the subgrid's command bar) are hidden...
I guess that the problem is that I've 3 times the same N:N relations for my subgrids in the same form, but I don't figure out why it's a problem and I don't know how can I make the + buttons visibles...
Could you help me?