The Clinic Plus installation is password protected because of some unknown reason established by the developers. According to the info on the download page, you will have to send them an email to stat the nature of the business that you're planning to use Clinic Plus and then they will decide if it's suitable to use it or not and of course send you the installation password.
Here's the paragraph extracted from its official website: "Please kindly email us at [email protected] for password after downloading the software setup. Please kindly indicate the nature of your business / clinic practice and contact details so that we can forward you more relevant information. "
