Proceed with caution. The Schema Operations Master role is the hardest of the Flexible Single Operations Master roles to find. That should be a clear single to not tamper with it unless told to do so. Here is what you need to do:
•Register the Schema Snap with this click Start --> RUN
• Type regsvr32 schmmgmt.dll and press Enter.
• Click OK.
• Open an MMC.
• Click File --> Add\Remove Snap-in.
• Click the Add button and select, Active Directory Schema.
•3) Select Active Directory Schema, Right Click, Operations Master.