Being able to add/subtract to an existing shape or mask path using the pen tool is a huge time saver for people that create complex clipping paths with the pen tool. This functionality existed in past versions of Photoshop, but has been removed in newer versions.
For example, make an ellipse with the ellipse shape tool. Then hold down shift and a little + shows up allowing you to add to that shape.
Now try to draw an organic shape with the pen tool. When you hold down shift or alt to add or subtract from the shape, nothing happens, no + or - shows next to the cursor. It used to!
So the solution is to draw another shape, click the direct select tool to select the whole shape, control + C to copy, then select the shape you want to add it to, and paste it. Then go to the drop down menu to set the path operation. This needs to end so PSD maskers can save time.
For example, make an ellipse with the ellipse shape tool. Then hold down shift and a little + shows up allowing you to add to that shape.
Now try to draw an organic shape with the pen tool. When you hold down shift or alt to add or subtract from the shape, nothing happens, no + or - shows next to the cursor. It used to!
So the solution is to draw another shape, click the direct select tool to select the whole shape, control + C to copy, then select the shape you want to add it to, and paste it. Then go to the drop down menu to set the path operation. This needs to end so PSD maskers can save time.