Open the ‘Market Watch’ window (shortcut CTRL +M). Right-click in the market watch window and select ‘Symbols’ (jump directly to this using the shortcut CTRL+U).
Expand the folder you want to add in the navigation tree.
If you would like to add one to your ‘Market Watch’ window, select it and then click on ‘Show’. Click on ‘Close’ when you are finished. Your new instrument should appear at the bottom of the ‘Market Watch’ window.