Print all print formate at once

ERPNext Accounting
1

Dear all,
I am using erpnext version 13 for my small business

Lest say i have i have following print formate:

  1. sales_Invoice1.
  2. sales_Invoice 2
  3. sales_invoice 3
  4. sales invoice4
    I wanna group all four sales_invoice formate together as All_Invoice.
    While i print i will choose print formate All_Invoice in where i can generate all four invoice at once which could save man power:

Please do sugest and help me,Your help and suggestion will highly appcrciated
Thank you