Editing Polices

User right assignments (Logon locally allowing logon locally right to a normal user.): 
On DC
Create a user a/c in ADUC
Allowing him to logon
Start >programs>admin tools>DCSP
>expand local policies>user rights
>D/C allow logon locally>add the user.
Start>run>gpupdate.
Verify: 

On DC logon as a user
Disabling password complexity policy: 
Start >programs>admin tools>domain security policy
>expand a/c policies>password policy
>Double click on p/w must meet complexity requirements.
Select disabled
Apply >ok
Minimum pwd length (do it as 0 characters)
Close
For refreshing policy
Start >run>cmd>gpupdate
Password policies: (Enforce password history 24 pwds remembered) 
Maximum p/w age
Minimum pwd age
Pwd must meet complexity requirements
Store pwds using reversible encryption.
Re-setting User passwords: 
On DC
Start >p> ADUC >expand users
Select the user right click
Reset password select