XR11 Remote buttons

I have an XR11 remote.  While viewing the guide on TV and choosing a program that is currently live (not recorded), a message appears at the top of the screen indicating that if I press a specific button on the remote, that I can then watch the live program from the start/beginning.

Unfortunately, the button displayed on the screen is NOT on my remote.

I've tried the 'Replay' button, the '<<' button and the '<' button.  None of them will start the live show from the beginning.

Which button do I press on my XR11 remote to watch the live show from the beginning?