Video - GP6 editing: Tuning options

The "Instrument" panel allows you to set the tuning of your tracks. You can select the tuning from the existing library (tuning options for 4 to 8 strings) or create and save your own custom tunings. 

You can also add a capo to your track. There are two options: use a standard capo or set a partial capo that is only applied to the strings you choose.