Step 1: Go to the Github.com.
Step 2: Go to the repository you that want to change the access or delete permanently.
Step 3: Go to Settings
Step 4: Click on Collaborators
Step 5: Click on Manage
Step 6: Scroll down to find the Danzer Zone Sometimes, we might need to refresh the page here.
Step 7: Click on the Change visibility if you want to make public or private. If you want to delete the repo then click on the Delete this reposiory
Step 8: Select what visibility, then type or copy-paste the repository path-name, lastly click on I understand, change repository visibility.