There can be several reasons for configuring users to automatically enter expert-mode upon login, two of which may be:
– You have several administrators and you want to keep the expert-password secret.
– You can’t be bothered to type expert and then another password to enter expert mode.

Create the user, using adduser if needed.
Then issue the command chsh -s /bin/bash <username>

If you need to go back to the old setup, issue the command chsh -s /bin/cpshell <username>

Reference: CHKPs article sk32250

–Gos