Change the interval for a graph by choosing values from the
      Hours and Minutes
      drop-down list boxes. If necessary adjust the width and height of
      the graph and then click the update button.
      The changes to the time span apply to all the graphs on the
      Graphs page but have no
      effect on the graphs on the Monitor page.
    
      To change the graphs both here and on the
      Monitor page use the configure
      graphs link on the top right. This opens a dialog box
      for setting the default interval for the x-axis. Save any changes
      that you have made and the values chosen will be the defaults
      whenever you log in. You can also change the defaults from the
      Monitor page as described in
      Section 3.2, “The Server Graphs and Critical Events”; defaults for other
      users will be unchanged.
    
Use the reset button to restore the default value for the interval. Doing this will also reset the default size of the graphs.

