Context Access Tab

Reading the "Creating a Blog in MODx Revolution" tutorial and I can’t make sense of this:

Then, go to the Context Access tab. Add an ACL (a row, basically) that gives this user group access in the ’mgr’ context, with a minimum role of Member (9999), and the Access Policy of ’QuipModeratorPolicy’.

What this does is allow anyone in the ’Moderators’ usergroup to moderate posts in your threads, and also notifies them via email when new posts are made. They can then either login to the manager to moderate comments, or click on links directly in the emails to approve or reject the comments. Your ACL should look something like this:

I get a table and tabs that relate roughly to what’s being said but I can’t replicate it?

Revolution 2.0.8-pl traditional