APM OWA Login Confirmation Box

Hello,

 

First forgive my ignorance if this has been addressed but I am fairly new to configuring APM policies. Our security department has asked that on our OWA landing page that when a user enters their AD credentials and hits login, that a confirmation box pops up w/ a security warning (company specific text). If the user does not agree they will click something like no and it will return them to the login page, but if they click yes, it will process their login. I am at a loss on how to do this. Any help is greatly appreciated.

 

Thanks