How to remove itemid from link to event

I'm using Events Booking 1.6.1 and I want to open the event details on a new page without some modules.

If I'm logged in it's working good, but if I'm not logged on the event details opens on the same page with all the modules.

I noticed the difference in the link to the event:
Logged in:
test.racingleague.nl/index.php/component...ockenheim?Itemid=228

Logged out:
test.racingleague.nl/index.php/component...zandvoort?Itemid=101

Where does the itemid come from, and how can I remove it, since it's also working without the itemid.

As replied via support ticket, we just need to create a menu item (a Hidden menu item if you don't want to show it in the frontend) and everything will work well !

Tuan