You dont.....
The Yamaha CS80 had the same fixed Presets and 2 buttons to 2 memory panels memories and 1 main panel per bank....
(http://farm1.static.flickr.com/131/377636118_8b067c63b8_o.jpg)(http://farm3.static.flickr.com/2135/2434676264_7893a3101e_o.jpg)(http://2.bp.blogspot.com/_FMBJEkaC8Lw/SCXl9iKgdpI/AAAAAAAATf8/1eelh8Ln8vY/s1600/138928D6451D4FC7910E41B6143975BD.jpg)
The 2 memory buttons are not on the CS80V.... just panel......
and here is the kicker.... when you store a user preset, you store everything, including both preset banks and all performance sections which is why you cant seamlessly patch change without the silence....