I already have a promotion scheme set up where Registered members gain an additional user group (with additional permissions) when they reach a post count of 10. This works fine, and I want to keep this promotion and group as is. But now I also need another user group with a post count of at least 10 *and* a minimum of 30 days since registration. What's the best practice - a new promotion for members of the Registered group (i.e. all members) for 10 posts/30 days registered or a promotion on the Registered (10 Posts) group for 30 days registered? Or doesn't it matter?