APM OWA Public / Private Computer Selection Buttons

Microsoft Outlook Web Access provides a way to implement different security settings by letting the user check one of two radial buttons to indicate whether the computer they are logging in from is a public or shared computer, or their own private computer. (See attached screen capture.) I have APM configured for OWA, and am seeing the basic username and password prompts, but do not see that selection presented in the login screen. I need to find a way to allow this selection to be presented to the user. I've searched F5 documentation, deployment guides, etc. but haven't found anything specifically addressing this. Can anyone point me to any documentation on how to accomplish this? Thanks for any information.