Delegate Calanders out of Sync.

One of our users has access rights to her boss’s Exchange account – however
originally when she set up a meeting for him it didn’t show in his diary.

Our genius had a look at the problem and now everything appears – as
conflicting appointments.

We know this is an Exchange problem, but we are not sure exactly what it is.

Do you have any ideas – I would like to fix it and then tell We how I did
it.