A collection is a group of proofs that have been created at the same time. You will know when a proof belongs in a collection if you see this icon on the proof screen:
Managing your proofs in a collection
If you are an owner of one or more proofs in the collection, after clicking the collection icon, you will see a cog icon. Click the cog icon to reveal the manage collection pane where you can perform these actions:
Edit the collection name
Nudge all reviewers who are not yet finished reviewing proofs you own in the collection
Add an owner to all the proofs you own in the collection
Add a reviewer to all the proofs you own in the collection
Replace the approver on all the proofs you own in the collection
Archive/reopen a collection folder
If you add an owner or add a reviewer to the proofs you own in the collection, a single email notification will be sent. This is a great way to perform bulk actions on a group of proofs you own.
Note: You can always add new proofs to a collection by clicking the collection folder you want to add to, then using the file uploader to drag & drop a proof/s. You can move an existing proof into a collection too.
If you want to know how to remove a proof from a collection, check this article for more information.
Tip: When you’re in a collection, use the keyboard shortcut key shift + left and shift + right to move through proofs in the collection. Learn more about shortcut keys.