GitHub documentation: https://docs.github.com/

For support related to GitHub services for example user account support: https://support.github.com/

For requests related to WHO GitHub Enterprise account, please raise a request in WHO MyService self-service portal

• GitHub Enterprise License request: "GitHub Enterprise License Request" form
• New repository request: "Source Control Request Form" form
• GitHub team: "New/modify GitHub team" form
• Other requests, please create a generic request ticket, include "GitHub" in the subject