Additional field added in Infoset unable to use as a selectable field

I added 2 fields as additional fields to the Organizational Assignment infotype in a PNP Infoset that I created via SQ02. When I select the infoset to build a query via adhoc query the fields are listed in the Org Assignment infotype and available for output but are not available as a selection field. There is no check box under the Selection column, only a checkbox under the output column.

How do I make the added additional fields available as a section field as well as an output field.