Hi Donna,
You didn't overlook anything, you are right about not being able to draw a simple circle. That may sound strange, but it helps to understand that QuiltAssistant is specifically designed to create patchwork patterns (as opposed to applique).
It doesn't "think" in lines, but in shapes. So every time you draw a line or curve, it will try to extend it to connect to existing lines, which divides the design into separate closed shapes.
A work-around: first draw a straight line, through the center of where you want the circle to be. Then draw two half circles, both starting and ending on that line. Afterwards, you can right-click on the line in the middle of the circle to remove it.
Also, you can't create shapes with holes in them (a limitation of the software). If you were able to draw a simple circle, you would do just that: create a surrounding shape with a circle-shaped hole in it.
There are many tools to help you align and connect everything properly, you can find more about that in the
PDF manual.
Arnout