Originally Posted by
zaje
Thanks for spotting mistake with drawing, corrected one is below. The old ring has the pin which was under the crankarm, the new one - no pin, this made me think of orientation.
That's the same illustration.
The chainring goes on as shown in the second photo. That should put the ring flaring to the outside for chain clearance and give you a recess for the chainring bolt heads to fit down into.