This is done via self-registration.
To Self-register, please log in to your “My Open Group” Site here. Please click on “Click here to join the GitLab group” under the forum where access is desired. Once at the members GitLab there will be a request to verify your email address. Your Password will be the same as your current The Open Group password. Click on “sign-in” to access GitLab.
Once the steps above have been completed you can access the members GitLab through the Forum Collaboration site on the left navigation bar.
Should any access issues arise please reach out to forum-support@opengroup.org.