See the discussion at the second item on this page.
http://www.home.no/gunnar-jonny/bobs/letters.htmI am not a pianist so I don't use a sustain pedal. I have the FC-2 set left to right, Fill 1, Fill 2, PM Decr, PM Incr. I use Foot Switch 1 for Start/Stop most of the time but for some songs use it for glide. Foot Switch 2 is set for Intro/Ending 1.
There is no right or wrong way. Each of us has different needs. But, in my opinion, Technics is the most versitile of all keyboard brands with foot switches.