As your projects grow in size and complexity, it can be challenging to make sure all of the code changes are reviewed by enough people on your team. Now, with the a multiple reviewer requirement, you can specify exactly how many people are required to review every pull request—so important projects are protected from unwanted changes.
To require multiple reviewers for pull requests, go to your repository’s settings and select “Branches”. Under “Protected branches”, select the branch you’d like to protect with a multiple reviewers requirement. There you can select the number of reviewers required for each pull request to that branch.
After you’ve selected the number of reviewers, you’ll see that number and the status of their reviews in the sidebar and merge section of pull requests to protected branches.