Create a GitHub Organization and Add Collaborators

Go to GitHub

Click Sign In, enter your account credentials, and click Sign in.

Click the + icon on the top-right corner and click New organization.

Enter the organization name, billing email, and click Create an Organization.

Invite collaborators to the organization by entering their email/GitHub username. Ensure the collaborator has a GitHub account, otherwise the person will not be added as a collaborator.

Click Finish.

If you already have an organization, click the organization name under the profile.

Click Invite someone.

Enter their GitHub username or email.

Click the appropriate role for the collaborator and then click Send Invitation.

The collaborator receives an email.

The collaborator clicks Join, and now the collaborator is part of the organization!