Blu-ray control buttons during playback

How can I control the Blu-Ray playback using the Kodi iOS remote? Or I could use a keyboard if necessary. When I play a Blu-Ray ISO, I can navigate the main menu and choose a title, but then I can’t figure out how to get back to the menu. Also, the arrow keys don’t work during playback. On this particular Blu-Ray (Spears & Munsil HD Benchmark v2), the left, right, up, and down arrows are supposed to move between titles during playback.