I successfully set up the synchronization of my Owncloud server's default calendar and default contact list based on this askubuntu thread. I have more than one calendar and contact list on my Owncloud server though. I have checked the calendar and contact apps for ways of adding new contact lists and calendars. The contact app does not seem to offer this feature. The calendar app has an option to add new calendars, but when I press the respective button, I am forwarded to the system settings page.
Thanks for your hints in advance!
(my device is a BQ Aquaris E4.5 with Ubuntu 14.10-r21)