To create a new event just click appropriate day or drag a time frame and "Create Event" dialog is shown.
First thing, you need to select value of "Events Source" and click "Select". Please note that for "Mixed" calendars you can select from internal events sources. "Mixed" calendars allow events creation for "Jira dates" sources and this results into adding of Jira issues.
Some event types require you to enter users, project or issue. Please make sure to fill all the required fields.
Events created via the Company Calendar can be edit, deleted or copied. Just click an appropriate event and there click "Edit", "Copy" or "Delete" button:
