Hi Rao,
There is a good document on this.
Have a look : http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/502c39b9-02e8-2d10-18a7-d32fade7b18b?QuickLink=index&…
Also, if it's ABAP, why not give access SU3 to them. Only when the user gets locked or forgets password comes to your team.
Divyanshu