I'm working in Infinity Photo iOS on my iPad Pro and need to make a selection using the Pen tool. I can't figure out how to make a sharp anchor point to join two curved paths (please see attached). Normally in Photoshop, I'd hold down the alt/option key and click on the anchor to activate the "V" corner feature so I can adjust the two tangent handles independently, but I don't have this ability on the iPad. I tried the "Sharp" and "Smooth" bottoms in the Node mode, but they just toggle between straight-lined joints and curved lives without a corner. The path handling tool doesn't seem to be too intuitive, and I need to use the Pen tool to make precise selections. Any assistance would be greatly appreciated.
Also, is there a feature like Photoshop's "Exclude Overlapping Shapes" or "Intersect Shape Areas"? I find that when I create a smaller shape within a large shape, the large shape disappears.