To change the settings for a chart's legend:
1. Open the chart for editing, and click on the Chart Settings button.
2. Scroll until you see Show legend, and select which option you want.
- Always: the legend will always appear on the chart
- Never: the legend will be hidden from the chart
- Auto: the legend will appear if there are multiple groupings are present
3. The chart will automatically refresh and click Done when finished.