There are two features for changing the way portlet windows are displayed on a dashboard.
One feature lets you collapse a portlet to display only its name and toolbar, and then to expand the portlet to its normal state. The Collapse or Expand buttons are in the toolbar on the right side of each portlet.
Exploding a portlet is a temporary viewing option that lets the portlet consume the entire dashboard display area. When you are finished using the exploded view, click the X button in the top right area of the portlet to return to normal viewing.
The size of an exploded portlet depends upon the size of the console browser window.