Microsoft Excel charts include legends by default. You can delete the legend or change the settings so that it isn’t inserted when the chart is created, but doing so can make the chart difficult for others to read, especially if it contains many data points. If you decide that you need a legend after all, you can manually add one to your Excel chart. The Mac version of Excel has the same options for creating and editing a legend as the Windows version does, but the process for adding the legend is different. Tips Warnings Writer Bio

How to Add a Legend on Excel for Mac - 51