Candle lighting? Lighting halo at 6pm today. Should I burn halo until it burns out?

You don’t have to stay in the house, if you have things to do go do what you have to do. But, you have to be mindful of leaving burning candles unattended for long periods of time. You have to use common sense.

Do I have to present (in the house) while halo or any candle is burning?

If you can, yes. If you can’t at least burn it for a minimum of six hours.