Class groups copies your school's actual class room setup (e.g. kindergarten, primary, JSS classes and SSS classes)
Sub groups are the arms of each class group in your school (e.g. jss1 kindness,jss1 goodness, ss1 peace,ss2 wisdom)

To add a new class group   

  1.  Go to setup >> Students setup >> Class groups
  2. Click on the New class group button
  3. Name the class group (e.g. ss2 )
  4. Add a fee  group
  5. Add payment items
  6. Save 
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