Tony Hughes,
Yes. You'll have to purchase a sustain pedal and connect to the sustain jack on the back.
The sustain will work for each voice called up to the right of the split point or accross the entire board (if in FULL keyboard mode).
In program Mode, you can layer up to 4 voices and choose which voice{s} (PROGRAM EDIT, Page 3/3) should be affected by the sustain pedal.
Hope this helps.
Thanks,
AJ