...but will be in future
Your example works now. Yes, time not available for user but if time not important for you just take attendance for Group1 in 10:00 and for Group2 in 12:00 separately (you'll have one session for 2007/10/30)
Because I haven't time for coding now... 
...but will be in future
Your example works now. Yes, time not available for user but if time not important for you just take attendance for Group1 in 10:00 and for Group2 in 12:00 separately (you'll have one session for 2007/10/30)
...but will be in future
Your example works now. Yes, time not available for user but if time not important for you just take attendance for Group1 in 10:00 and for Group2 in 12:00 separately (you'll have one session for 2007/10/30)