I manage a team of copywriters and I need to figure out what an honest AI policy looks like before someone makes the decision for me

I run a content team at a mid-size agency. Eight writers. We have not had an official conversation about AI use yet because I have been avoiding it, which I know is not sustainable.

Here is the reality as I see it. Some of my writers are already using AI heavily and producing more output as a result. Others are not using it at all and feel threatened by the ones who are. Clients are starting to ask whether our content is AI-generated. I do not have a consistent answer.

What I want is not a blanket ban, which would be both unenforceable and probably wrong. But I also do not want to say anything goes, because I genuinely think there is a quality and craft difference that matters to me and to the clients who pay for it. Has anyone built an AI use policy for a creative team that actually works in practice and does not feel like a corporate document nobody reads?