Hi Josh Many thanks for your reply.
I only started using LiveCycle last week so I am working at a very basic level and I am not a computer programmer. I have the visibility method setup as follows:
The main form that all users will see contains a dropdown menu with option YES or NO.
In Action Builder I have created an action as follows: if the text in the drop down menu is changed to YES then a additional form on a separate page will expand for the user to complete.
As I said earlier if the user selects YES from the drop down menu then it is mandatory to complete this expanded form. The expanded form contains a number of text fields which I want to make mandatory only if the user selects YES.
Sorry for being a bit slow here but I would appreciate it very much if you could explain again for a beginner.....................