You can create categories to further identify and filter your communication lists. The Communication List Categories page is located at Admin Tools > Settings > Communication List Categories.

Rock ships with one category, called "Public", but you can create as many categories as you want. For example, you could create a category called "Staff Only" to use when creating communication subscription blocks you want only to be available to staff members. Categories can have child categories as well. You can use communication list categories in a number of ways: for paring down the recipients in your communication lists, in creating subscribe/unsubscribe blocks in your organization's website, for creating data views to use when filtering communication lists... The more you use them, the more you're going to see how extensive they are. We'll be talking about communication list categories a little later in the Communication Preferences chapter.

Keep in mind that the category's security will be used to decide if the individual can see the communication lists associated with that category. This means an administrator can set up a new category (e.g., Staff) and then add security to that category such that people with access to view that category will be able to see any communication lists that are tied to that category. Don't forget, the admin would have to configure the Communication List Subscribe block's settings with the new category.