All users that intend on participating in the Noctua open beta must at least be valid GOC users with permission to edit in Noctua. To that end, all new users, and users without permissions to login to Noctua, must have their information entered in this form. Entering information into this form does not give you instant access to Noctua. The information must first be verified by an authorized GOC member and pushed out to the production system. If the form is not being used in the context of a bulk sign-up before a meeting arranged by the GOC, you should create a ticket on the GO helpdesk (https://github.com/geneontology/helpdesk/issues) so that somebody can review and manually input your information.
Expert users may directly use GitHub pull requests against the GOC user metadata at: https://github.com/geneontology/go-site/blob/master/metadata/users.yaml .