Hi Brianna

Thank you for noticing my post and taking the time to reply. I really
appreciate your input.
Sadly my problem can't be fixed via this route. My user doesn't want to have
her appointments automatically accepted and wants to accept or decline them
herself.
Outlook does give you a very small, written warning that this appointment
conflicts with an existing one but she doesn't see it (?!?!) and accepts the
meeting anyway.
It then becomes the computers fault (which becomes my fault) for letting her
double-book herself.
What I need is for the Outlook client to prevent a time slot being booked
more than once either by automatic or manual methods.
In all fairness, I seem to remember a much earlier version of Outlook could
be set to stop you making these sort of mistakes. It produced a huge, pop-up
window, with an "Are you really sure" kind of message. I think this is what
she relied on and needs back.
Any more ideas ?