If you would like to give an outside collaborator on your organization's repositories broader permissions within your organization, you can invite them to become a member of the organization.

Tips:

  1. In the top right corner of GitHub, 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. Under the "People" tab, click Outside collaborators. Button to select outside collaborators for an organization

  5. To the right of the name of the outside collaborator you want to become a member, use the drop-down menu and click Invite to organization.Invite outside collaborators to organization

  6. If the person you're inviting was an organization member within the last three months, choose whether to restore their privileges or start fresh, then click Invite and reinstate or Invite 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 Send invitation. Role and team options and send invitation button

  8. The invited person will receive an email inviting them to the organization. They will need to accept the invitation before becoming a member of the organization.

You can edit or cancel an invitation any time before the user accepts.

Further reading