Creates a new group level. Returns a GroupLevel object.
Syntax
expression.Add(RecordSource, FailIfThere)
expression An expression that returns a GroupLevels object.
RecordSource Required String. Specifies the name of the record source for the new group level.
FailIfThere Optional Boolean. If this argument is set to True and the new group level already exists, the Add method fails. The default value is False.