How realize Sales order rounding quantity

Hello Expert

I would like to know how to realize Sales order rounding quantity.

As I have checked other title there are a lot of same topic however I couldn't realize yet.

My scenario is as bellow.

There are the materials which we want to input every 12 Qty for instance.

I expect if I input 10 it rounds to 12, if I input 19 it rouns to 24.

I already created rounding profile via OWD1 and assign it to material master sales view.

However it didn't work.

As I have checked item category there are no flag on Rounding permitted.

Best regards,

Ichimura