For the team calendar macro, I need to be able to lock the event when a person is it.
For example, lets say user X creates an event A on the calendar and saves it.
When user Y clicks on the edit link in the calendar, another user X must not be able to enter the edit window of the event. Or at least, a message must be shown to X when he tries to edit the event.
I believe this link about Team Calendars restrictions can be useful for you.
Also, there's a similar discussion on this page:
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