title: Use ggarrange to change size and position of common legend
body: <p>I have used ggarrange to combine multiple ggplots onto one figure. For my purposes, the figure legend is too small and I need to be able to change the size. I also need to change what my figure legend says. Currently, each color is labeled A, B, and C but I need it to say 1, 2, and 3. I have edited my ggplot code to do this individually but when I use ggarrange to combine, I no longer have my saved labels.</p>