You don't even have to leave Confluence to create a new Outlook calendar.
Just go click to "+ Add Calendar" button and select the option "Create Calendar" which opens a new modal. Like in the open calendar modal you have the choice between three different tabs:
- Personal Calendars
- Group Calendars(only shown when using Office365)
- Shared Calendars(disabled when no shared mailbox is configured)
Select the desired tab and type in the name of the new calendar and create it by clicking on "Create". After a few seconds the calendar is created and already open.
Now you can directly create new events or schedule meetings.
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