Open Source Document Management System | OpenKM

For a set of Admin Users we gave a seperate password. Apparently the password is misplaced and want to change it. I tried using the default Uid/Pwd and tried updating password through User Admin screen it is not working.

Can someone guide me on How to change password of Users?

You might explain it better.

You've lost your okmAdmin password ?
You want to change password to some users ?
Or you want some users change theirselft the password ?

Because changing password to users, it's imply using edit user form in administration, sinceraly I don't understanding the problem.