Contains a Boolean value indicating that an OLAP hierarchy level is a custom group level rather than a level from the original OLAP cube.
      
<IsGroupLevel />
    | Element type | None | 
| Namespace | urn:schemas-microsoft-com:office:excel | 
| Schema name | XML Spreadsheet 2000 | 
None.
None.
      
<xsd:element name="IsGroupLevel" minOccurs="0" >
</xsd:element>