When you want to copy a selection in Photoshop, you need to use the Clone Stamp tool. This tool lets you create a copy of the selection, without having to select it first. To use the Clone Stamp tool, follow these steps:

  1. Choose the Clone Stamp tool from the Tools palette.
  2. Click on the selection you want to clone.
  3. Drag and drop the clone onto another location in your image or document.