I am creating a channel that starts by launching a video screen. When the user presses the 'back' button the channel navigates to a grid with all of the content listed. I would like to notify the user that in order to move to the home page of the channel that they need to press the 'back' button.
I would like to briefly show a short text message over the video. I have looked into using roMessageDialog but this takes over the whole screen

. I would like the video to continue playing while the message is displayed.
How would I go about doing this :?:? Is this something that would require me to build the channel in 'raw' Brightscript, not using the Roku components?
What are the Roku requirements for this sort of navigation? What will Roku look for when reviewing my channel?
Thank you very much for taking the time to read this

. Any information that you can provide will be greatly appreciated

.