If you come across a public project to which you want to contribute, you can now request access to join! Public projects that have access requests enabled will have the option for you to request access. The admin(s) on the project must accept your request before you can be granted access. If your access is granted, you will be added as a contributor to the project.
If you simply want access to read and use datasets, you may do so freely on public projects without needing to request access.
Open the project on which you want to collaborate.
Click the ellipsis button in the top right, then click Request access from the drop-down menu.
The drop-down menu will read "Access requested," indicating that your request has been submitted.
The admin(s) on the project will be notified via email that you have requested access.
If the admin(s) grant you access, you will be notified via email that you have been added as a contributor to the project.