0660S - Amendment to PARR permissions to allow PAC to update with UNCC approval

To make the Performance Assurance Report Register (PARR) a UNC related document and therefore subject to the provisions under UNC TPD V 12. This will allow the Performance Assurance Committee (PAC) to request updates to the PARR without recourse to the full modification process but instead be able to submit requests for new and amended reports to the UNCC for approval.