User Exits:Shift wise Operator

Hi Guys,

Anyone knows any enhancement to add customer specific fields in trasanction MF42N .In my client, they have three Shifts. Shifts will vary based on week that means this week may be first shift (say Group AA)then the next week they are moved to second shift.

So in REM I want to confirm shiftwise along with the shift group.

Pls throw some light on this.

Tell me the prodcure ..

Thanks & Regards,

Meena