Setting Tab > Options(default) > Features

• Wikis
• Restrict editing to collaborators only
• Issues
• Project

Setting Tab > Options(default) > Merge button

• Allow merge commits
• Allow squash merging
• Allow rebase merging

Setting Tab > Branches > Protected branches > Choose a branch.. Dropdown

• Protect this branch
  • Require pull request reviews before merging
    • Dismiss stale pull request approvals when new commits are pushed
  • Require status checks to pass before merging
    • Require branches to be up to date before merging
  • Include administrators

• Protect this branch
  • Require pull request reviews before merging
    • Dismiss stale pull request approvals when new commits are pushed
  • Require status checks to pass before merging
    • Require branches to be up to date before merging
  • Include administrators