You can make anyone a member of your organization using their GitHub Enterprise username or email address.

Tips:

  1. In the top right corner of GitHub Enterprise, click your profile photo, then click Your profile. Profile photo

  2. On the left side of your profile page, under "Organizations", click the icon for your organization. organization icons

  3. Under your organization name, click People. The People tab

  4. On the People tab, click Invite member. Invite member button

  5. Type the username or email address of the person you want to add and click Enter. Add member form

  6. If the person you're adding was an organization member within the last three months, choose whether to restore their privileges or start fresh, then click Add and reinstate or Add and start fresh. Choose whether to restore privileges

  7. If the person you're inviting has never been a member of the organization or if you cleared their privileges, choose a role for the user, and optionally add them to some teams, then click Add member. Role and team options and add member button

Further reading