Add custom permission to sharing popover

hi i want to add a permission to share folder (from who shared folder). in box

  • Allow editing
  • Allow resharing
  • Set expiration date
  • Note to recipient
    the permission that i want to add is “+ show content” . the permission is someone that a folder shared with him. he can see the content of folder (files in it) or not?
    would you mind giving me a tip or guide?

You posted in the development section. So it’s a bit confusing, you want to add a shortcut button to create shares? And then how it is done on the backend?