for my daypilot calendar control, how to change the code to display varchar and date type data instead of two datetime type?

I have this table called event. I am using daypilot calendar control to display the data from the event table. Currently I am using name, name2, eventstart and eventend data to display in the calendar. But now I would like to display BOOK_DATE, START_TIME and END_TIME instead of eventstart and eventend. Because now that the START_TIME and END_TIME is using varchar instead of datetime, and because the date is now seperated into one field which is BOOK_DATE, I don't know how to change the code.
For the 3rd screenshot I am using name, name2, eventstart and eventend to display. But I would like to have the same output like the 3rd screenshot but using BOOK_DATE, START_TIME and END_TIME column field data instead. you can see from the 2nd screenshot the properties, If i replace eventstart with START_TIME and replace eventend with END_TIME. Where should I put the BOOK_DATE? I think i explained it very specific already. Hope someone helps. 

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