How to show customer_name instead of name in linkfield?

ERPNext Customize ERPNext
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1

I’d like show customer_name field data instead of name field which a naming series. After selecting populating name/customer data it’s showing naming series.

Right now I am using following field setup:

{
   "fieldname": "customer",
   "fieldtype": "Link",
   "in_list_view": 1,
   "label": "Customer",
   "options": "Customer",
   "reqd": 1
  },

I appreciate your help.