A few us only do Nyzule with everyone on skype (if they don't have a mic, then they still use skype to listen to us talk).

We give everyone a letter, like A/B/C/D above.

Everyone says if they found a lamp and stays at it.

The leader says an order, like: D, C, B, A. Then everyone responds:

D done.
C done
B done.
A done.

Followed by:

D off
C on
B off
A on.

Leader repeats the process by saying another order: xCxA (not C and A remained on, so their orders are correct. The solution in this case is to swap B and D as those are the only other positions that D and B can occupy in the order:

B done
C done
D done
A done.
All lamps go on. Rune of Release gets triggered and we go up to the next floor.

If NO or FEW lamps light up, then it means our original order DCBA is wrong. For every lamp that doesn't remain on, we put it in a different spot in the order.

If you did D first and D didn't remain on, then D must be in the second, third or fourth position in the order.

If C remains on, then you know D can't be in the second position in the order, etc.

I'm hope, I'm making the logic clear.