How Can I create Custom Colum in P.O Number IN SALE PERSON Vice in selling module

How Can I create Custom Colum in P.O Number IN SALE PERSON Vice in selling module ?

Hi,
Refer Link ,how to add custom field
https://frappe.github.io/erpnext/user/manual/en/customize-erpnext/custom-field.html

Thnkyou shraddha :slight_smile: