Provides access to the DataPilotField used to layout
multiple data fields.
This data field can be inserted into the rows dimension or columns
dimension by changing its Orientation
property. This interface can be used to access the data layout field
before multiple data fields are inserted into the DataPilot table. It
remains invisible as long as the DataPilot table contains at most one data
field.
Returns the DataPilotField used to layout multiple data
fields.
If the field does not exist yet, it will be created. It is possible
to insert this field into the rows or columns dimension by changing
its Orientation property.
