Hi Paul,
Yes, the Crosstabs are sortable and you can also drag and drop fields to add rows/columns.
A row or a column in a crosstab is essentially a group. You go into the Crosstab Expert > Select the field in the row/column and go to the Group Options button where you can sort it in Ascending, Descending or Specified order.
You can also Sort the Crosstab to show in Ascending/Descending or Show Top N based on the Summary Fields. This is done by right-clicking the Row/Column in Preview Mode > Row/Column Options > Row/Column Group Sort Expert.
-Abhilash
