GroupProperty
     To distinguish between various group properties, you can use the
        
    GroupProperty enumeration type which is used by security
      functions.
  You can use these values:
| Value | Description | 
|---|---|
                GroupPropertyDescription
               | 
              Description of the group. | 
                GroupPropertyEnabled
               | 
              Group is enabled. | 
                GroupPropertyStartDate
               | 
              Group restriction by the start date. | 
GroupPropertyEndDate | 
              Group restriction by the end date. |