Question & Knowledge Check Messages & Captions Overlap

When creating a knowledge check slide or question slide and setting up messages such as "retry", "incomplete", "correct" etc it is good practice (at least from my perspective) to have these messages consistent in size and position on the slide. However the trouble with message objects is that they are not listed as a separate item, so they can only be selected by hand, manually. But if I have several of these and they are all on in the same position and therefore overlapping, I cannot select and hide those on top to see and edit the ones on the bottom, if that makes sense. At the moment, the workaround has been to move each message to a different position to prevent any overlap, then once all the messages have been edited (eg. color, font etc), I then need to position them to the exact same place on the location on the slide.

Is there a better workflow to handle this? Or maybe a feature I have not yet discovered.