nope you can't as I got this from the moderators
¤ Please also refer to the Casting Calls guideline which has clearly stated since 30th April 2011 that
[5. The casting call system is not to be used for group shoots or model days]
The system message sent to every Model member on 10th February explains the current process:-
Seeking Paid Work & Promoting Model Days / Evenings ( It should be at the top of your Inbox - or possibly in your Trash if you Deleted it Unread )
Please note this sentence, which is still relevant:- Be aware that one member is currently fastidiously going through the Casting Calls reporting
any which break the April '11 guidelines leaving Moderators no alternative but to remove them
and if you post a Model Day in the Casting Calls section they will almost certainly Report you too.