After installation, when you first log into Chronicall, a "Cisco Central Recording (with BIB) Configuration" configuration wizard will appear as the final step.
Assign the Recording Library an extension. This will have to fall into the systems extension range and must not be in use by another device. You will also need to select the extensions you wish to record. If an extension doesn’t appear it doesn’t have a compatible phone / devise. See here for compatible recording devices.
Select the device pool Chronicall should use. If you don't see this option you only have one device pool configured.
Above is a list of commands Chronicall will send to your Cisco system to complete the recording setup.