The submission period is open. No submission deadline is set.
To register for an indico account, please follow this link:
https://account.cern.ch/account/Externals/RegisterAccount.aspx
Instructions of what to do may be found here:
https://indico.cern.ch/event/558933/attachments/1373804/2192902/ARW_CERN_Account_HOWTO.pdf