PivotTable Fundamentals - Microsoft Business Intelligence Tools for Excel Analysts - page 35

Figure 2-25: Adjust the Number of Columns property to display the slicer data items in more than one column.
Figure 2-26: With a little formatting, slicers can be made to adopt the look and feel of your overall dashboard.
Controlling multiple PivotTables with one slicer
Another advantage you gain with slicers is that each slicer can be tied to more than one PivotTable.
That is, any filter you apply to your slicer can be applied to multiple PivotTables.