[@johnjamesjacoby Keymaster 11 years, 9 months ago]

Hey there. You’ll need to write a small plugin to do this, as currently there is no classification of what roles a user has available to target.

I’ve created this Trac ticket and slated it for the 2.7 release. It won’t be too difficult for us to make this easier for you in a future release.

https://bbpress.trac.wordpress.org/ticket/2737