But this isn't spring training. Whether these folks have the tools to play these positions is one piece of the equation. Whether the Reds would make that change now is very different story.
There's the famous situation when a Tigers player, Mickey Stanley, in 1968 was moved to shortstop to replace Ray Oyler, who was hitting below the Mendoza line. Stanley was moved there to get more offense in the lineup and he had never played SS before in the bigs. He played shortstop creditably at the end of the regular season and stayed there through the World Series.
I don't think the Reds management would have played Stanley at shortstop.