Only used for contracts that are shared.
This feature is for collections that share contracts with other projects. For example, if you want to give all Fidenza holders a role but not all Art Block holders you'd use this feature.
Start by pasting the OS collection into the text box and click Save.
Then select the role you wish to grant on the last dropdown menu. Followed by Save again.
Once saved you're ready to go. Below is an example flow.