Please note that this tutorial is a general guide. The CalDAV server on your host may require different settings. If the steps described below don't work for you, please contact your host's or company's tech support and ask them what settings you should use.
The first step in setting up any third-party app to work with the Roundcube calendar is creating a CalDAV connection. If you haven't done it yet, this tutorial will guide you through the necessary steps.