Creating a calendar
To embed a simple calendar, add the following to the first post of a topic (note the separate lines):
[calendar]
[/calendar]
You can also include additional calendar options by adding these variables:
| Option | Example | Values |
|---|---|---|
| Hide weekends | weekends="false" |
|
| Hide specific days | hiddenDays="1,2" |
0-6 for Sunday-Saturday, respectively |
| Set the default view | defaultView="basicWeek" |
month, basicWeek, listNextYear |
| Ignore timezones | fullDay="true" |
For example:
[calendar weekends="false" hiddenDays="1,2" defaultView="basicWeek" fullDay="true"]
[/calendar]
And, et voila, that should be that. 
You can view an example here, which also goes into a little more detail about how to add items to one - Category Calendar demo topic