Hello Régis,
Dynamic Views doesn't have this functionality out of the box. However you can achieve this by using "Allow Free Form". This is a feature that you may want to research in Dynamic Views by reviewing the User Guide:
http://www.datasprings.com/userguid...rGuide.pdf ** Use CTL + F to initiate the search and search for "Allow Free Form" in the User Guide PDF document.
There's a training session coming up on 12/6/2012 that will cover the Allow Free Form feature in Dynamic Views:
http://www.datasprings.com/support/training ** Click the Dynamic Views tab to register for the training session.
Please let me know if you have any questions.
Thanks,
Ryan