To find the Service Set Tracker report go to Reports > All Reports > Search Service Set Tracker.
Every day, you can use the Service Set Tracker report to watch the # of your recurring customers with a frequency of Every Week, Every Two Week, Every Three Week, and Every Four Week Service Sets that you gain or lost. There are two additional columns:
J/W -- Jobs per Week.
W +/- -- Jobs per Week gain or lose.
Every Week -- Adds Subrtracts 1.0
Every Two Weeks -- Adds or Subtracts 0.50
Every Four Weeks -- Adds or Submtracts 0.25