Need workflow for po for particular item

i have create multiple purchase order daily basis but i have some few items this is expensive So i need confirmation workflow for particular item. can i do in erp next v15 and how it will be manage any suggestion?

You can’t set from the UI side, at a time you can set the only one workflow for purchase doctype.

Reference: Workflow conditions in erpnext - #11 by NCP

thanks for reply