A publisher / proof sender requires a license in order to upload and send proofs to collaborators using GoProof.
This feature is only available to GoProof Admins.
Login to the GoProof website and visit the Users dashboard.
Click Add Publisher.
Enter their details in the text fields provided and click Save.
To request a license for the publisher/proof sender, click on Request a license link provided or contact us here to send a support ticket.