The most basic way to draw shapes is using the Ellipse and Rectangle Tool in the Toolbar . These tools work identically – one draws a shape with rounded corners and the other draws a shape with right angle corners.
There’s no trick to using either tool. Just select the tool you want from the Toolbar and draw by clicking, dragging and releasing. The first place on the Drawing Stage that you click defines the first corner of the shape’s boundary box. As you drag your mouse with the button depressed, the box grows. When you release the mouse button, the ellipse or rectangle is created to fill the boundary box you’ve drawn.