[APP][Pro] IcalCalendar

Hi
i want to have a simple copy job
clearance:
wen I make a entry in Calendar 1 with a specific text , it must copy it to calendar 2

why:
I have a rehearsal calendar.
every time I have to copy this date over to my family calendar ( as the other people in the rehearsal calendar don’t have to know what I am doing in spare time :), read : family calendar)

how can I easily set this up?

i can read both calendars, and have some triggers running already to notify if there is an addon, or change in those calendars. And that works.
But copy an event from 1 calendar to the other still not figured it out how to setup.

need some help with that .

( no examples , as I don’t know where to begin )