The directory for residents is 100% opt-in.   Residents are not automatically included because some people don't want to share their information.   To opt in to the directory (a manager can do this for a resident also), the resident would click on their "Your Information Tab, and then "Profile".  There they will see Directory Settings in blue.  Click there and they can decide which information they would like to include.  Please let me know if you have any other questions at all.

As a Manager you can add your residents into the directory also - you would click into their record and then click on Directory Settings to choose which info to share: