how to create user exist.

Hi,

    I tried to create a user exist for mm01.

    At first I used se93 transaction to know the development class of mm01.

     Now I  placed the development class(MG) to find out the user exist  in SMOD.

     But it gives a message no values on  selection creteria..

     Please explain is there any user exist for mm01

thanks in advance.