{{noteRewrite|Subobject custom defined fields must have a unique combination of itemThis page is under review. Add example Coordinates, label, and data type. depth for each ordnance}} To add a subobject custom defined field:#From the '''Customisation''' menu, select '''Data Inventory Manager'''.#From the left pane of the Data Inventory Manager window, select a data category in which you want to add a subobject CDF. {{note|You can only add subobject CDFs to ''subobject tables'' - data categories that display as tables on a field report data entry form template. Examples of these''subobject'' categories tables are listed below. }}
{| class="wikitable"
! colspan="2" | List of data categories with subobject CDF functionalitySubobject Tables
#In the '''Customisation''' menu → '''Data Inventory Manager'''.
#From the left pane of the Data Inventory Manager window, select a subobject table.
#Expand the subobject table and select the data category to which you want to add a subobject CDF. If there is no data category under the specific subobject table select Uncategorised.
#In the right pane of the Data Inventory Manager window, click the [[Image:FieldTemplateIcon.png|Add]] button.
#In the CDF Editor window, add and save the subobject CDF in the same way you [[Add Custom Defined Fields|add CDFs to the main objects]].