Each User can easily change his own IUCLID password:
Go Home to the Task panel if you are not already there.
Under manage users, roles, preferences, etc , click Set password.
A dialog window appears in which you are requested to enter your old password, type and confirm the new one.
Click the Set button to allocate the new password.
A confirmation message appears. The new password becomes active after the next login.
It is strongly recommended to change the password the first time a user logs in to the application.