I have master table A
and table B child of table A
and table C child of table B
I create form_A (single record) and form_B (multiple record) and form_C (multiple record)
but I can not create a “master/detail” link to form_C from form_B because form_B is a multiple record form
we need to give a multiple record form the permission to have a detail form like this example http://phpdatagrid.com/examples/phpGridx/examples/master_detail_nested.php?iframe=true&width=850&height=800