MyoRep Match - how many "match" sets?

Say I do 15 reps on the first set.  I rest the regular amount of time, then perform the rest pause set and get 8 and 7 reps, matching the 15.  Is this exercise now over?  

Or, do I perform additional match sets based on how many sets I was prescribed for that exercise?  For instance, if 4 sets were prescribed for the exercise, would I do 2 additional match sets (ending up with 45 rest paused reps)?

If you do perform additional match sets, how long should the rest be in between each group of 15?