The Rivet command gives you an easy way to create locators that attach directly to a deforming mesh, just by selecting a face, point, or UV in their scene.
These nodes are especially useful for tasks like adding a prop to a character, such as sticking a button on a shirt, or attaching a medal to a uniform. See Create a Rivet for instruction on how to use a Rivet to attach locators to geometry.
A single UV Pin node can represent multiple nodes