An organization owner must allow forks of private and internal repositories on the organization level before you can allow or disallow forks for a specific repository. For more information, see "Managing the forking policy for your organization."
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On your enterprise, navigate to the main page of the repository.
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Under your repository name, click Settings. If you cannot see the "Settings" tab, select the dropdown menu, then click Settings.
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Under "Features", select Allow forking. If you do not have this option, you may not have permissions to control this setting. Check with the owner of the organization that administers the repository or with the owner of the repository about your access.
