Assume that you want to use the predefined asset type Windows Machine to manage the inventory and the vendor data.
Perform the following tasks:
Create a new custom entity, Inventory using the Create new entity schema option from the Schema Manager view.
Extend the Windows Machine asset type to include the fields from the custom entity, Inventory, using the Extend asset type option from the Schema Manager view.
Click on the link to extend Windows Machine to include the fields from Inventory
See Extending Windows Machine to include the fields from Inventory.