I got a exchange server client that states that by mistake she moved a
meeting request to a different time by mistake and she didnt received any
warning message about the action she did. For example, if you are the
organizer and you moved the meeting to a different time/hour you received
this message: Would you like to send an update to the attendes regarding
changes to the meeting?

Is there a way we can set up an option that when you change or move any
existing meeting give us an error message or a warning message?

that action only affects the calendar of the user , It doesnt affect the
original date/time meeting