This may be a stupid question but after much searching... here goes.
I see in ver 1.8.0 (which I'm running) that there's an option "Added play all unwatched option in play menu" and I cannot find a "play menu".
ION has been running a Cold Case marathon every Friday night recently. So now I have over 20 episodes of Cold Case and I'd like to just select the series and have them continuously play one after the other. As it is now, I can play one episode and after that's complete I have to stop whatever I'm doing to select the next.
This may sound like laziness but when working around the house it would be more convenient to keep the noise going rather than stopping my project to select and play the next episode.
From the Series screen, use the arrow keys to get to "Cold Case". With "Cold Case" selected, do CTRL+SHIFT+P. That's the equivalent of the Play button on a remote control. Then, you probably want Play All Unwatched.