Cenico, first of all we would need to knpow what authority you are working under, else it is quite impossible to be sure of answers, but baic logic says.
1)You can log bathtub or bicycle time in a logbook if you wish but you can't count it towards flying time totals if it isn't flying time! (observation as above applies to your particular logbook. So many differnces in layout column numbers are meaningless)
Does your logbook really not have a simulator records section?
2)Surely it is self-evident that as the instructor flying VMC you cannot log IFR as you are't flying IFR. The stude is flying simulated IFR and may log that as such. If you are on an IFR flightplan then of course you log IFR
3)Logic again suggests that IFR being "flight controlled by sole references to instruments" it has no bearing whatsoever on the presence or absence of daylight, so almost certainly No.