Shabbat full event time calendar export

can you add an option to have shabbat and other yomim tovim as a feel event, aka the shabbat event starts at 4.30 pm Friday afternoon and ends 530 pm Saturday night, as opposed to the current system where the start time and end time are separate events 

I am trying to automate my home shabbat mode based shabbat and yom tov times (so my motion detectors dont turn on lights on shabbos etc) and need the entire shabbat time blocked out