For example, to create the auxiliary object class building and add it to the structural object class acmePrinter do the following:

The preferred method for extending the LDAP schema is to use the Domino LDAP Schema database. Use the Domino Directory to extend the schema only if IBM® Lotus® Notes® or Web users require access to the new schema elements through documents in the directory.

Creating a subform to define an auxiliary object class

1. Make sure that you are working in a copy of the Domino Directory template (ACMENAMES.NTF) and that you have Designer or Manager access in the ACL.

2. From the IBM® Lotus® Domino® Designer, open ACMENAMES.NTF.

3. In the left pane, select Shared Elements and then Subforms.

4. Right-click New Subform. For the subform name, type a name for the auxiliary object class, for example, building. Click OK.

5. Do the following to specify the properties for the new subform:

1. Keep the Options property "Include in Insert Subform... dialog" selected.
2. Deselect the Options property "Render pass through HTML in Notes."


1. Leave the other properties the same, and close the Subform Properties box.
2. Save and close the new subform.

1. Open the subform you just created.
2. Choose Create - Field.
3. Next to Name on the Basics tab of the Field dialog box, specify any name, but precede the name with a dollar sign ($) to indicate that the field is an operational field -- for example: $building.
4. Next to Text on the Basics tab of the Field dialog box, select "Computed when composed."


1. Specify the formula for the field in the pane below as follows:

FIELD $objectclass := $objectclass : "subform";1

Where subform is the name of the subform you specified in step 5 -- for example:

FIELD $objectclass := $objectclass : "building";1

You must enclose the subforn name in quotations marks (" ").

8. Save the new subform.

9. Do the following:

1. In the left pane, select Shared Elements and then Subforms.
2. Select the new subform, click Properties - Design, and select "Prohibit design refresh or replace to modify."

After you create subform to define a new auxiliary object class, complete this procedure to add the auxiliary object class to a structural object class. You can add the auxiliary object class to a new structural object class you have created, or a default structural object class.

1. From ACMENAMES.NTF, open a $xxxExtensibleSchema subform or a form, as described in the following table:

To add the auxiliary object class to	Open this subform or form
dominoPerson	$PersonExtensibleSchema
dominoGroup	$GroupExtensibleSchema
dominoOrganization, dominoOrganizationalUnit, and dominoInternetCertifier	$CertifierExtensibleSchema
dominoServerResource	$ResourceExtensibleSchema
locality	$LocalityExtensibleSchema
organization	$organizationExtensibleSchema
organizationalUnit	$organizationUnitExtensibleSchema
a structural object class defined in the default schema that doesn't have a corresponding $xxxExtensibleSchema subform	The form used to define the object class
a structural object class you defined in the Domino Directory	$xxxExtensibleSchema Where xxx is the name of the new structural object class

2. Choose Create - Resource - Insert Subform.

3. Select the subform you created for the auxiliary object class -- for example, building.

4. Click OK.

5. Close and save the subform or form you opened in step 1.

6. Complete the procedure "Applying template customizations to the Domino Directory database."

Related topics

Using the Domino Directory to define an LDAP attribute for a new object class
Applying template customizations to the Domino Directory database
Using the Domino Directory to extend the LDAP schema

Glossary