Directory is the place where you would be able to see the complete list of all the channels and users
Along with this, you would also be able to search for a specific Channel and a specific user from this interface.
As the name says, directory contains the complete list of your assigned channels and groups and people who are in your contact book.
Directory will not show any private Channels and any person who has not shared their user details
Search in the directory is very simple. On each tab, you just need to start typing and OrgChat will start to filter out the results.
Same thing is true for Users as well. It will show the result of Users as you type along