After a widget is created you have the option to make it any size you desire. Simply hover the cursor over the widget until you a small symbol in the bottom right corner appears. The symbol should be two arrows going in opposite directions. Click, hold, and then drag to the desired size.
Once widget is the right size you can move it without changing the size of it. Hover the cursor over the top center of the widget where the name of the graph is.
Your cursor will turn into a hand if you are in the right spot.