I'm not sure about all the terms in dancing, so I'll just describe it by movement.
Ladies: Chachacha to the right (men's left!), walk past him, turn around 180 degrees (facing the gent), do a hiptwist, walk back, do a spot turn (In'tl Style Spot Turn!) and return in dance position. (This is danced holding just the gent's left-hand.)
Men: Let the lady chachacha to the right, turn 90 degrees by moving weight from Left to Right to Left leg, chachacha's, let the lady turn underneath left arm and return in dance position.'
I'm sure Jonathan (or anyone else for that matter!!) is better at explaining this
Hope it helped though! 
"Carpe diem, quam minimum credula postero." - Horace