According to documentation here: https://confluence.atlassian.com/bitbucketserver/add-default-reviewers-to-pull-requests-834221295.html
I should be able to go to Project Settings ->Default reviewers
Why don't I see that option?
I only see this at the repository level.
What version of Bitbucket Server are you using? Project level administration for default reviewers was introduced in Bitbucket Server 5.2. You see the version you are using by looking in the footer.
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