chilli_query Problem

HI ,

I want to authenticate a specific user (myname) with password (mypass). I am using

chilli_query authorize ip 10.1.0.2 username myname.

1. This is causing users with other name to be verified also. say (steve)
2. can i use chilli_query authorize ip 10.1.0.2 username myname password mypass. to force a particular username with particular password.

Thanks