Here is how to enable app access requests for members only in your github organization
- 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 "App access requests" section
- Then select the "Members only" option
- Finally click the "Save" button to apply the changes
