Best practice question

Hi,

I just wanted to learn what is the best practice or solution on how multiple owners of sites powered by nginx could add their redirects?

I know that in Apache this can be done with per user .htaccess but as nginx doesn't have such feature i'm eager to know how this is usually done in multi-site environment with nginx.

I would have couple of wordpress blogs hosted on one server and couple of users to maintain them. Ideally, each one of them should be able to add redirections at least.

Would it be possible for nginx somehow to use per user vhost configs included in nginx.conf and apply them somehow in runtime?