Record sort based on a specific portal row
I have a layout with a a portal. the portal is sorted in descending order so that the last record added to the portal is always displayed. When I sort records in the layout in descending order everything looks fine. However, when I sort records in ascending order based on a field in the portal they look out of place because the sort appears to be based on the first record in the portal. How can I always sort by the last portal row?