How to duplicate calendar events copy paste?

I am trying to build my schedule on calendars with my iPad. I would like to put in my work schedule but I don't work the same days every week. I am looking for a way to copy paste/duplicate entries so I don't have to keep inputting them. Because I don't work the same days each week/month I can't use the repeat feature. I have tried a long press to copy and paste but it moves the whole event and doesn't duplicate it. Is there a way to do this? I have found that I can do this on my Macbook Pro in iCal and then it updates the iPad through iCloud but I would like to do it with my iPad because I have the iPad and iPhone with me all the time and the Macbook stays at home.