ZEPHIR consists of three main packages: merchandise management, accounting and production. Additional packages and modules are available for each main package to provide further functions. The basis for all packages and modules is always the main package merchandise management. All functions are based on this package. The main and additional packages always include a user licence. The number of users can then be extended by additional user licences for the respective package. The number of users for the modules always depends on the number of licences available for the main package.