authorization for order confirmation

Hi Gurus,

Can we assigned different Users for the confirmation for individual opeartions.

Ex:

I have two opeartions in side of order

0010 ......I want only USER 'A' can confirmed this opeartion through CO11N. System will not alow any other user to do confirmation except 'A' ...........

0020 ....I want only USER 'B' can confirmed this opeartion through CO11N.

Plz remember that order is same .

Thanks in advance

Gannu