Do you mean I need to go to the "Toolbar" drop down at the top of the screen? When I go to the toolbar for the actual view and look for a Zoom drop down, I can't find it
Shaji - On the Graph View view toolbar, the Zoom dropdown is left of the Mode drop down that controls mouse selection and to right of the Colour drop-down where you specify which field to colour by. You may need to expand the size of the Graph View window to see all the drop-down icons on the View Toolbar clearly.