Here are the step by step instructions on how to add a new license key to register your copy of Jiwa.
The license key you will receive is coded in such a manner that it is tied to your company name. It also has the number of registered users attached to it as well as the expiry date.
Once you have your new license key you will need to open up Jiwa (as an administrator) and then select System / System Maintenance from the Jiwa Menu.