Repository administrators can enforce required reviews so that pull requests must have at least one approved review before they are merged.

Note: Before enabling required reviews on a branch, you must first set the branch up as a protected branch.

  1. On GitHub Enterprise, navigate to the main page of the repository.

  2. Under your repository name, click Settings. Repository settings button

  3. In the left menu, click Branches. Repository options sub-menu

  4. Under Protected Branches, select the branch you want to restrict using the drop-down menu. Selecting a protected branch drop-down menu

  5. Select Require pull request reviews before merging. Pull request review restriction checkbox

  6. Optionally, select Include administrators. This enforces the required pull request reviews on the repository administrators.
    Include administrators checkbox

  7. Click Save changes.

Further reading