How to prevent SharePoint “Members” from approving documents?

Hi everyone,

I’m facing an issue with the Content Approvals  Teams feature in a SharePoint document library.

I noticed that a user who is only a Member of the SharePoint site was able to approve a document, even though they should not have permissions to do so. The approval went through successfully, which is not the expected behavior.

I would like to block site Members from approving documents and ensure that only a designated approver (or a specific approvers group) can approve items.

I have already checked the Content Approval settings and Versioning Settings, but I’m not sure what I’m missing in the permissions configuration.

My question:

What is the correct way to configure the library or site permissions so that Members cannot approve documents?

Any guidance would be greatly appreciated.

Thanks!