How can we add a disclaimer or pop up for actions like change address and change marital status?

Hi all,

I have a question.

We want to add a disclaimer or pop up during the actions of change marital status and change address. In this disclaimer/pop up we want to say to the employee that when he changes the marital status or the address he has to put in the page "Document records" a certificate for the marital status or the address. We have tried to do these changes with the sandbox "Page composer" but we couldn't do it. Our question is, Is it possible to do it? If so, How can we add this disclaimer or pop up?