Disable specific fields in 'MM01`through 'authorization(without ABAP Code)'

Hi Experts,

I am a Security consultant and my requirements is to 'Disable' specific fields in MRP1 tab of MM01. So my question is : Is it possible to accomplish this requirement through authorization (Without ABAP Code). I am aware that this can be done through TCode 'OMSR'. However, by doing so these fields get restricted to All Users, whereas I need it for only select users.

I was informed by the customer that this can be done through Authorization(Without ABAP Code).Please assist.

Thanks in advance!

Thanks,

Kranthi KR