You can add more objects of the same type by clicking again on the canvas—you don't need to select the same object type again. When you select an object from the Object Palette and then position the cursor over the canvas, the cursor changes to a crosshairs pointer. The appearance of the crosshairs pointer indicates that Builder is in add mode, and clicking will add an object to the canvas. You can adjust the position and size of the object after you have added it.