Thanks Josefe777, but in Chrome this opens the print settings. i want to duplicate a group of fields (time, date, single line text, and paragraph text), if you want to see the form, the link is: http://museolibre.org/inscripcion-sedes-agenda-cultural-conferencias/ (IT IS IN SPANISH and is the Auditorio part) thanks for the help.
As far as i know it is not possible to duplicate a group of fields but you can add as many groups as you like in the form and then add check boxes to show or hide a group when clicked by using the conditional logic .