Net Profit Margin = net income / total revenue
Net Profit Margin: You can choose a colour for the plot, by selecting the box next to it to bring up a colour palette.
Panel: You can also choose where the study is placed, by default it is set to Auto applying it to it own panel at the bottom of the chart but if you would like to overlay the study onto another panel, click the drop-down arrow next to Auto and select a panel e.g. Panel 1.
Once you have finished adjusting parameters, click Done