Subscribers can’t comment

Check your Allow people to post comments on the article setting in Administration > Options > Discussion. Also remember that setting change be ‘set’ for any post.

I can globally turn on and off the “anyone can comment” field.
I would like only people who are subscribers to post comments. Is there something I’m missing?
Is there a checkbox hidden somewhere that only user level “X” can post comments?

In Administration > Options > General check “Users must be registered and logged in to comment”