I'm setting up a publishing oriented social network with some complex permissions and I had trouble getting this plugin working. I couldn't see the meta-box as any user and did't quite understand the FAQ.
Your user level has broadcast access (Broadcast access role)
There's no "broadcast access" role in my user role editor. There must be incompatibilities between this and the "User Role Editor" plugin. I can add "role_broadcast" in the "add capabilities" field however and when a user has that checked off, everything appears to be fine. I looked at "inputs on line 217 of ThreeWP_Broadcast.php and there seems to be a huge number of roles. Are they all needed to work properly?
I also didn't know what this meant in the FAQ -
The correct post type(s) have been selected