Functionality in SAP to allow you to print multiple copies of a form

I've been asked by a SD functional team member how to:

This is the table and field names for Number of Messages functionality in SAP which should allow you to print multiple copies of a form at one time.

Program Name:SAPMV13B

Screen #:0211

Transparent Table: NACH

Field Name: ANZAL

Data Element: NA_ANZAL

How do I go about setting up this functionalilty?

Thanks,

Laurie