Objects tab in CRM sales order to populate installed bases

Dear experts,

CRM 5.0

We are using CRM sales order functionality. The transaction type has the leading business transaction category as BUS2000115 - Sales. Now for a particular scenario, we want to be able to determine the installed base linked to a sold to party in the sales order. But the objects tab is not visible in the transaction type as the leading category is not service. I even appended a secondary transaction category 'BUS2000116 - service' in the relevant transaction type but it did not make the objects tab visible. Could someone please share any experiences they might have in this area?

Thanks & regards

Ritwik Sharma