[Tipp2014] possibility of substitution for presenting a poster

Dear TIPP2014 organizers, I am registered as presenter of two posters: http://indico.cern.ch/event/192695/contribution/168 http://indico.cern.ch/event/192695/contribution/68

but there have been not foreseen last minute changes that will make difficult my presence in Amsterdam the week of the conference. Would it be possible to add Sebastian Nowak (in cc) as cohautor of both the materials so that he can backup me if I am unable to attend?

Many thanks for your help and best regards, Federico Sforza