It would go right before the ValueOpDeltaAdd in the morph, it references the bodypart and the morph that is the first one in the sequence.

valueOpMinus
Figure
hip
FirstMorphInSequence
valueOpDeltaAdd
Figure
BODY
MasterDial
deltaAddDelta 1

than of course if you are doing a whole sequence of morphs you want to do in order you can string them together, each morph adding another valueOpMinus so the second would just refrence the first and the third would reference the first and second and the fourth would reference the first second and third, like this.

valueOpMinus
Figure
hip
FirstMorphinSequence
valueOpMinus
Figure
hip
SecondMorphinSequence
valueOpMinus
Figure
hip
ThirdMorphinSequence
valueOpDeltaAdd
Figure
BODY
MasterDial
deltaAddDelta 1