Yes you can!
When you start recording, the YuJa window where the source settings, previews and other setting were configured disappears by default, leaving only the discrete recording control window. To re-open this without ending the recording, click on the YuJa icon from the control bar.
Note that opening this window can get in the way of any presentation on the main display, so of you are in an enhanced room, drag the window over to the secondary monitor. If you only have a single monitor in the room, be sure and close the window when you’re done.