Calendar : disable handler for specifics events


I’m discovering Calendar component and I would like to know if what I want to do is possible (and how).
I have a calendar with events from differents person, and I don’t want that a user can edit others’ events. In fact, my problem is mainly on move/resize actions.
I have tried to put a check in my BasicEventMoveHandler but it only prevent modification of my model, but the UI is modified.

I hope you will be able to help me.
Thanks in advance for your answers.