Many thanks to you, spongehammer and saiyadjin!
I am understand that this is my error, or rather misunderstanding of the way that events work. I have this picture when this app "misbehaves":
And I expected it to work like it is in my first message. I am just try to understand how instances works and how to address them properly in my event sheet. I am sorry if that sounds offensive to anybody.
I am understand the importance of the event's order, but still don't understand why my second event sheet is not working "properly". Two instances are sharing the same place and they aren't changed their animation frame, but why?