How to Configure Unit in Items(Purchase in Dozen, Sales in Nos) in Zoho Books?

How to Configure Unit in Items(Purchase in Dozen, Sales in Nos) in Zoho Books?

Go To Setting --> Preferences --> Unit of Measurement --> Add Unit PCS & Dozen in the Unit Field (If Not available)---> Go To PCS --> View Unit Conversation --> New Unit Conversation 1 Dozen = 12 PCS--> Save.