[RDA Plenary] Call for speech

Hello RDA WG,
I started to explore the website and RDA in general just few days ago. I
registered my account to some interesting WG. I would ask you some
information about the agenda of RDA Plenary that will take place in
Barcelona in April. Is it possible to apply for talks? I didn't understand
if "Group maturity" is a application requirement and I didn't found any link
for oral contributions others than those for poster session in general.
Thanks in advance,
Martina Zilioli, CNR-IREA (SS Milano)
RITMARE - Linea Dati
office | +39 02 23699590
email | ***@***.***
skype| martina_zilioli