To move a chart to a new location in your sheet:
Left-click the chart.
While holding down the left mouse button, drag your chart to its new location.
Release the mouse button.
Resizing Charts
To enlarge or shrink a chart:
Left-click the chart once.
Move the cursor to one of the short black lines on the perimeter of the chart. The regular cursor should change to a double-headed arrow.
Hold down your left mouse button, and move the cursor to enlarge or shrink the chart. Dragging a side change one dimension, while dragging a will simultaneously change horizontal and vertical dimensions.