cPanel WHM reseller video demo display here. Update your flash player to see this WHM reseller hosting video tutorial. Packages enable you to create your own web hosting packages. These packages form the core service of your web hosting business. Web Host Manager (WHM) helps you in this process by allowing you to customize a large number of parameters, from disk space and bandwidth to the number of sub-domains and MySQL databases, as well as specifying whether CGI, shell access and what cPanel default theme are provided.