Inviting a collaborator to a personal repository
You can send an invitation to collaborate in your repository directly to someone on GitHub..
- 
Ask for the username of the person you're inviting as a collaborator.
 - 
Navigieren Sie auf GitHub zur Hauptseite des Repositorys.
 - 
Klicke unter dem Repositorynamen auf Settings. Wenn die Registerkarte „Einstellungen“ nicht angezeigt wird, wähle im Dropdownmenü die Option Einstellungen aus.

 - 
In the "Access" section of the sidebar, click Collaborators.
 - 
Click Add people.
 - 
In the search field, start typing the name of person you want to invite, then click a name in the list of matches.
 - 
Click Add NAME to REPOSITORY.
 
Next steps
- For reference information, see Permission levels for a personal account repository