there are two options margin and margin plus . In margin plus. Under these two you can trade . Have a look on ICICIDIRECT for more details on these two.
I am also with icici.
I never did intraday with them.
There is a demo, just google demo icicidirect.
it will take you to icicidirect website
OR
Directly you can find the link on icicidirect website without logging.
Do tell me how's your experience with intraday, I am also planning to do a single trade with them.
Thanks
cool