Adding custom data item to a Data Entity Type

Select Manage and Data Entity Types in the left pane.
Select the entity type.
Select + Add Item.
Enter the name of the custom data item.
Select the data type.
Select Confirm to save the custom data item.

Note: After a custom data item is created, a check mark appears in the Custom column in the entity type grid. A green circle in the State column indicates an Active state and a grey circle indicates an Inactive state.