If there’s an existing preprint on Advance that you would like to claim authorship of, you will first need to login to your Advance account (for instructions on how to create an account on Advance, please read here). Once logged in, go to your preprint on Advance, click on the ellipses next to “Embed” (under the preprint title) and select “Claim authorship”. This will open your default email application with a pre-filled template to contact our Advance team requesting to assign authorship to the item in question. Alternatively, please email advance@sagepub.com with the DOI of the item you would like to claim authorship of and your account details.