Team Calendar: How to lock an event when a person is editing it

[Username]

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. 

[rrudnicki]

Hello there, 

I believe this link about Team Calendars restrictions can be useful for you. 

https://confluence.atlassian.com/display/TEAMCAL/Restrict+a+Calendar

Also, there's a similar discussion on this page:

https://answers.atlassian.com/questions/43079/team-calendar-restrictions

Regards, 

Renato Rudnicki