Use one of the statues to start offline training.
You can train for a maximum of 6 hours.

If you want the full 12 hours of offline training you must have a donate coin.
When you enter and use statue your donate coin remove.
To get it, you can donate and then buy it in the store for points.

To start skilling, you need to click on the chosen statue (etc. Magic Level Statue).
The character will log out and skills will start growing even if we don't play.
You can skill up to 12 hours.
If you've trained for 10 hours, enter and leave the character for offline training, the character will only be skilled for 2 hours, even if you leave her offline for 24 hours!