If there
are hierarchies that are not assigned to the Rows or Columns roles,
then you can replace a currently assigned hierarchy with an unassigned
one.
To replace
a hierarchy, right-click on a level heading and select
Change assigned-hierarchy to unassigned-hierarchy.
The old
hierarchy is removed from the query, and the new hierarchy is added
to the query in its place. If the new hierarchy was previously assigned
to the Slicer role, then the old hierarchy is moved to the Slicer
role.