Some Visio objects (like the two chairs in this diagram) can be re-dimensioned by dragging any of the anchor points (i.e., tiny squares) that appear on the sides of the object when you click it. This approach doesn't work for tables or for text labels (like "Big Chair" and "Small Chair" in this diagram.)
The size of a table is automatically determined by the point size used for the table and field names. To change the size of a table, just click it then select a new point size from the drop-down list.
