How to segment your Facebook Lists 

You can use lists to organize your clients, family, friends, etc on Facebook. Using a list, you can post an update for specific people, like your coworkers, clients, or friends who live near you.

To create a new list:

From your News Feed, go to the Explore section on the left and click Friend Lists. If you don’t see it, click See More… then scroll to find it.
Click Create List.

Enter a name for your list and the names of friends you’d like to add. Keep in mind you can add or remove friends from your lists at any time.
Click Create. In addition to any lists you create, you’ll also see smart lists. Smart lists are automatically created and stay up-to-date based on profile information you and your friends have in common (example: work, school, family, city)