I want to make a new shape with the pen tool. The first point starts at a corner on another shape.
When I make the first point, Illustrator automatically selects the existing shape. In stead of making a new shape, I'm adding points to the old shape.
But as stated in the title, I want do start drawing a brand new shape, which happens to share a starting point with an existing shape.
You could lock the existing shape Command +2 on a MAC
Does it perhaps help if you turn on the "Disable Auto/Add Delete" option in the general application preferences?