Add a Caption To an Existing Slide

## Can you think of a better caption?
Each slide can have more than one caption. Check out the current slide show and add a caption (or two).
If you need help, check out the Appendix in the training manual.

Start by opening the current slide show referenced in the issue and review the Appendix in the training manual for guidance. Choose an existing slide and add one or two captions; the work is done when the updated slide displays the new caption text.

Written by the indexing model from the issue text.