When adding a lot of links to a list (typically, documents like FAQs, products, etc), it's a long process to add many links.
You have to add each link one at a time due to the way groups work (as they are not link specific).
Proposal
If you're editing a group that contains a link, you have the option to select many links at once which automatically adds the correct number of items to the group with any remaining fields being blank