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Then the active directory should populate. Click on the folder containing computers as shown below:
Select the computer on which you wish to install the Billing Management Studio and then click the Install Button on the right hand side of the screen. This will initiate the installation of the Billing Management Studio on the computer that you have selected as the target for installation.
Identity Syncronizer requires an agent service to be installed on each domain controller to capture password changes. In the Identity Syncronizer Management studio click on the "Agent" tab, this will list each domain controller in the domain and allow the installation of the agent software without having to remotely connect to each machine.
To install the agent on a domain controller click the "install" button in the row associated with the machine. When the install button is clicked you will be asked for domain administrator credentials. Enter these credentials and click "OK"
There will be a message in the management studio stating that the installation is in process – once the installation is complete this message will disappear. 
Repeat this process for each domain controller.
Each domain controller MUST be restarted after the agent has been installed for the agent to collect passwords.