Authentick will create a LDAP directory for the application. The third-party application can connect to it and get a list of all users.
LDAP directory requires requires no further configuration besides enabling it for a given application in the application settings.
In the application settings you will find the following details:
Hostname and port of the LDAP server
Base DN of the LDAP configuration
Bind User Password
You will need to configure these details inside your application to connect against Authentick.