Ive never grown them my self but i from what i understand is that auto flowers only veg them selfs for around 14-21 days then depending on the strain start flowering no matter the conditions or light being thrown at them . its all about time with them
you can leave your lights on for 24 hours.They are autoflowers,they flower no matter what.I would leave lights on atleast 18.The whole time.There are some great threads on this site about autos.