Your purchase of a PHPKB license grants you the right to make use of a single instance of the software. You may temporarily install a second instance of PHPKB on an internal development server for testing and deployment planning, but only one instance of PHPKB shall be in operation (available for access to your admin users or end-users). If you wish to run more than one instance of PHPKB, you must purchase an additional license for each additional instance. An additional license is not needed if the software is deployed on a development server or staging server for testing purposes.