Here is how to manage the publication of github pages sites for your organization in github
- First click on your profile picture in the top-right corner of the header
- Next click on "Organizations" in the dropdown menu
- Click on the "Settings" button next to the organization you want to manage
- Click on "Member privileges" in the left sidebar under Access section
- Scroll down to the "Pages creation" section
- Then select "Public" to allow publishing, or deselect it to prevent publishing GitHub Pages sites
- Finally click on the "Save" button to apply the changes
