Defaulting of buyer on iProcurement

There are 2 queries as given below

Query 1:

User are using smart form in Oracle iProcurement. when user perform checkout for smart form , then buyer field appears.  Is there any way to default Buyer name for a specific type of smart form.

For Ex:  For Smart form A, buyer should always be Mr. X

Query 2:

User performs checkout in iProcurement after adding Inventory items to cart. User have to manually select Location, check Inventory checkbox and give the name of Subinventory.

Is there any way to default location, check inventory checkbox and default subinventory. If user has ordered item A which is assigned to a single child organization, then user wants system to automatically populate delivery information for the item.