How do I disable the button Author Contract Terms through Forms Personalization?

Hi all,

I have a requirement to disable the button Author Contract Terms button from the Purchase Order.

From the core menu/function, I don't have the option to enable only the View Contract Terms.

So, I enable the buttons by adding the function Manage Contract Terms on the menu. But I need to disable the button Author Contract Terms through Forms Personalization.

I've been trying, but it's not working. When I validate, it works, but when I enter on the form from the beggining, the button is enabled.

Does anybody know how can I achieve that?

Thanks,

Juliana