To display another security with the same settings in the chart window, click with the middle mouse button on the relevant security in the Explorer.
Or hold down the <CTRL> key when you click with the left mouse button. Another alternative is to replace the security in the chart using the <SPACE BAR> on selected securities in the Explorer.
If you click on a folder with the middle mouse button, all the securities it contains are displayed as a chart show with the current settings. Read the chapter Chart show.