How do you display a legend in an ArcGIS Online map presentation?

Question

There don't seem to be too many tools or functions associated with the "new" map presentation feature for the ArcGIS Online map viewer.  I would like to display a legend on the slides of my map presentation, to help explain the data displayed in the map.

CraigThompson2 · Answer

There is an "Options" icon on the upper left toolbar ribbon.  In the drop-down is a checkbox for activating a Legend for all slides.  Beware, there is no way to turn off layers in the legend so you will see all layers including the Base Map.