If you import a Dynamic Module built using the Module Builder, the backend pages will be created automatically.
Note that if you are in Multisite, you need to add the module for the sites you want, so it creates a provider for that module and shows under Content page.
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items