The Events Calendar/ permalink/

How to change The Events Calendar permalink.
;y permalinks:
http:// myweb .com/event/concert-acdc.html/

I want this:
http:// myweb .com/concert-acdc.html

where to change this?
'rewrite' => true,
for
'rewrite' => array( 'slug' => 'event' ),

Is there a way to add the event category first?
http:// myweb .com/concerts/concert-acdc.html
http:// myweb .com/football/manchester-sandoria.html

Finally on the events url it adds a / at the end of the url.
http:// myweb .com/event/concert-acdc.html/

and should be:
http:// myweb .com/event/concert-acdc.html

thanks in advance.

http://wordpress.org/plugins/the-events-calendar/