Your account can have multiple item types from which you can choose when creating an item. Each item type can have different data sections for the item and a different cover sheet. For example, the Regular Item type may have the following data sections:
and a Capital Purchase item type may have the following data sections:
Included in budget
Each type can (and likely would) have their own cover sheets.
You can specify in which meeting agenda styles a certain item type can be available to users when creating items.