Restrict two forms to a single role

I’ve experienced a problem with forms and roles. I’ve got a role that should access two forms (custom order forms) which it does if I create a new order. But if I edit a order that another role have used with another form(we can call it admin form), I will get the access of that form in editing mode. If I restrict my role to one form it works fine, it always opens in my default form and works like a charm. Is it possible to restrict it to two forms only? I’ve tried to use the manage roles functions