LinuxQuestions.org - Allowing password-less access to system-config-usrs program using pam.d

I have an assignment in class where the question says to edit a file in pam.d directory to allow any users to access system-config-usrs program without being prompted for root password. After a while of trying to figure it out my teacher gave me the hint that the file is password-auth. However I couldn't figure out what to edit in that file. I think it had to do something with pam_permit.so but I tried many different edits and the usrs are still being prompted for root password.

here's the password-auth file below. I know it seems like cheating but I'm trying to learn here. So can anyone help me out with this?

Code:

#%PAM-1.0

# This file is auto-generated.

# User changes will be destroyed the next time authconfig is run.

auth        required      pam_env.so

auth        sufficient    pam_unix.so nullok try_first_pass

auth        requisite    pam_succeed_if.so uid >= 1000 quiet

auth        required      pam_permit.so



account    required      pam_unix.so

account    sufficient    pam_localuser.so

account    sufficient    pam_succeed_if.so uid < 1000 quiet

account    required      pam_permit.so



password    requisite    pam_cracklib.so try_first_pass retry=3 type=

password    sufficient    pam_unix.so md5 shadow nullok try_first_pass use_authtok

password    required      pam_permit.so



session    optional      pam_keyinit.so revoke

session    required      pam_limits.so

-session    optional      pam_systemd.so

session    [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid

session    required      pam_unix.so