[EventCalendar] Permalinks question

[Sebastien]

When using pretty permalinks, all posts placed in EC calendar are 
displayed within the "events" category in the address bar..
i.e.  www.website.com/events/event-post-permalink

for some posts this is ok, but for the majority, the permalink should 
display the main category it is affiliated to
i.e. www.website.com/performance/event-post-permalink ...   instead of 
the EC category which in my case is /events/.

is this something I can do with EC  or do I have to tackle it in 
wordpress or even change the .htaccess file (please no)

any help would be greatly appreciated!

thanks
Sebastien
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