Strangely enough, Microsoft offers a bizarre method for handling a custom sort order in a pivot table. It's called a manual sort order. To change the sort order in the user interface, you simply go to a cell in the pivot table that contains "North," type the word "South," and press Enter. As if by magic, North and South switch places. Of course, all the numbers for North move to the appropriate column.
The VBA code to do a manual sort involves setting the Position property for a specific PivotItem. This is somewhat dangerous because you don't know whether the underlying data will have data for "South" on any given day. Be sure to set Error Checking to resume in case South doesn't exist today:
On Error Resume Next
PT.PivotFields("Region").PivotItems("South").Position = 1
On Error GoTo 0
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