To disable it you can go to Feature Settings -> General Tab, and you'll see the "Enable Calendar" option.

If you want to it to redirect to your calendar, then you'd want to enable it and you'd need to edit the header.tpl template file. If you're using our latest version, then you'll find the line to edit on line 185.

You'd need change this:

PHP Code

<a href="{ubb url="ubb=calendar"}">{$lang.CALENDAR}</a> &nbsp;&nbsp;&nbsp;

To something like:

PHP Code

<a href="http://www.domain.com/your/calendar">{$lang.CALENDAR}</a> &nbsp;&nbsp;&nbsp;