Model builders use lists to group related items in a model. You can create different types of lists that suit your requirements.
Refer to the table below for a description of each list type.
| List type | Description |
| Flat list | Flat lists contain list items with no hierarchy. For example, you can use a flat list for information that does not require structure at multiple levels, such as transactional data. |
| Simple list | Simple lists contain list items with a parent/child hierarchy. For example, you can use a simple list to organize employees in different departments. Drag and drop list items to create a hierarchy in one list. Note: You can only add data to child list items. |
| Composite hierarchy | Composite hierarchies contain multiple lists that each roll up to a parent list. For example, the G3 Location list rolls up to the G2 Country list, and the G2 Country list rolls up to the G1 Region list. |
| Numbered list | Numbered lists contain list items with unique identifiers. For example, you can use numbered lists to manage duplicate names in a model. |
| List subset | List subsets contain list items from larger lists. For example, if you have a long list, you can create a list subset to target specific list items. |
Use appropriate name conventions for your lists. For example, if your list contains a group of employees, name it Employees.
Create your list in General Lists in the model settings bar.
