Adding a Legend
Use the legend of your Gantt chart to explain how you used markers and task bars to
schedule work.
To add a legend to your chart, click on the Table tab. Under the first Table command choose a table type, like 2x3 and add it to your diagram.
Drag your table to an empty part of the diagram.

Make a copy of a symbol or bar in your chart using the Ctrl + C and Ctrl + V.
Click in an empty part of the page to place the symbol or bar there.
Resize the symbol if needed to fit the legend. (To resize, click on the symbol and drag one of the black corner handles).
Drag the symbol to a row in the legend.
Adding Text to Your Legend
Click in the row where you want to place text.
Type your text.
Click in the page background to finish.