Delegate Doesn't Get Invitation After Changes Made to Appointment

hi,

I have a question related to appointments in Calendar (Outlook 2003). This
user is a delegate on behalf of her manager. According to this user, whenever
she updates(make changes) to an exisiting appointment in her managers
calendar and sents it out, this user who appears to be one of the attenddees
in that appointment doesn't receive a notification but other users do.

2nd Issue;
This user also claims when she is doing updates(make changes) to an
appointment on her managers calendar she can see on the top 3 button(Accept,
Tentative & Decline) which user says it shouldn't be appearing on the
managers calendar(which is being delegated to user) since she is the
creator..

Please shed some answers to the above .Thank you.
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