I think I've figured out what I need to do.
If I create a theme with only the trimmed down options that I need then I could assign that to my clients.
But I've hit two problems -
1 - I followed the steps from Post 4 on this thread - http://www.howtoforge.com/forums/sho...ighlight=theme
but I cannot select my new theme for my clients.
The theme appears as a radio button in System/Users, but cannot be selected. In the Client section it is not in the dropdown.
Thanks for your patience.