How to do it...

Perform these steps to extend the Active Directory schema with a new attribute:

1. Open a Microsoft Management Console window (mmc.exe).
2. From the File menu, select Add/Remove Snap-in.
3. From the left-hand list of Available snap-ins:, select the Active Directory Schema snap-in. Click the Add > button to add it to the right-hand list of Selected snap-ins:

1. Click OK.
2. In the left navigation pane, expand Active Directory Schema.

1. Right-click the Attributes folder and select Create Attribute from the context menu:

1. Click the Continue button to confirm that you want to extend the schema:

1. Enter the information for the new attribute.
2. Click OK when done.

Perform these steps to extend the Active Directory schema with a new object class:

1. Open the Active Directory Schema snap-in.
2. In the left navigation pane, expand Active Directory Schema.
3. Right-click the Classes folder, and select Create Class from the context menu.
4. Click the Continue button to confirm that you want to extend the schema.
   The Create New Schema Class window appears:

1. Enter the information for the new class.
2. Click Next> when done.
3. Enter any mandatory and optional attributes and click Finish.