It is simple: Here is what I would do........1. Make the form dynamic2. make each of those sections 1, 2, 3 and 4 as individual subforms say sub1, sub2, sub3, sub43. I would set the following property for the Dropdown "Commit On:" to "Select" under Object>>Field Tab. and following is the JS that goes under "change" event.......for the Dropdown //replace form.sub1.....2,3,4 with relevant SOMexpression.If (xfa.event.change == "A") { form.sub1.precese = "visible"; form.sub2.precese = "hidden"; form...