newbee..yet another question....!

[advid]

..is there an easy way to adjust the whole of the backing volume (drums bass guitar brass strings etc) if the volume level is too low (or high) in relation to the the keyboard as you play 'live'. ?

OK...found it it the user guide...

 

[Mayo]

How do you do this?
Or which page in the user guide?
I have 7500 I hope it is simillar?