Is it possible to force a user to change their password at the next login?

Yes, an administrator can force a user to change their password at the next login. 

To enable this option for existing users:

1. Go to the User section in the Enterprise Manager.

2. Click User Manager.

3. Open the Properties of the specific user.

4. Enable the User must change password at next logon option.

When creating a new user, this option is also available during user setup.

This option is not available for LDAP users,