Github group to override CODEOWNERS

Question

What am I trying to achieve?

I have a private repo with hundred of contributors, contributors are organise in Github groups. In order to merge, we require the approval of at least one person and, in case there is, an approval from a CODEOWNER.

I would like to create a group in Github which approval in a PR could override the one from the CODEOWNERS of a file. This group should not be added automatically to all the PRs but rather be an "admin" of that repo when it comes to approvals.

What have I tried?

Adding a general codeowner does not work, it adds the group to all the PRs and since CODEOWNERS has a specificity rule, any other more specific CODEOWNER will override the general one.

I have been searching in the codeowners documentation but I got no luck. Thanks in advance for your time