KOrganizer start up

hi

if i set up event from korganizer on elementary it does show in 
nextcloud. but if i restart machine and dont start korganizer after 
reboot the alarm wont show up 5 minutes before start of event. i 
understand that there is somekinda bckground application that works even 
when we close korganizer. how do i find which program it is so i can put 
it in start up aplication.

regards
ed