Span over dates and time in calendar

Trying to figure out a solution for my company but has so far found nothing that works.
I want to be able to set a start date and an end date WITH a time;
for ex. departure at 0900 on 29th of july and return at 1500 on 30th of july. I then want this to span the calendar, like it does in google calendar and other places. Right now i can choose two dates with time, or a timeline that can be manipulated with time. I’ve tried the start+end=timeline but all it does is make separate input for the start and for the timeline. Cluttering the calender with multiple inputs. Is there a way around this? I’ve also tried hour column, but that doesnt seem to connect well with calendar.