Through the module editor, sections in custom modules can be associated with custom objects registered in the Objects and Attributes section of the Administration module. In these sections, you can manage the instances of these custom objects. For example, if the "Book" object is registered, the instances of this object (specific books) can be registered, edited, and deleted here. The instances can also be created and edited offline through a spreadsheet and later imported to the system.
Note that each section is created to manage the instances of one specific custom object. For this reason, the system does allow more than one section to be created for a single object.
For details on creating sections of this type, see Chapter 17: Administration: Customizations -> Module Editor.