"jansie is aware of the fact that they have been 'earmarked' for the biscuit factory" what does this statement mean???

Jansie was aware of the fact that their future did not seem to bright but rather keeping in continuance of their general conditions, they would have an equally simple and stale future. Jansie adviced Sophie that she should be sensible because the latter was building castles in the air about how she would have a boutique of her own. Sophie intended to save up by becoming a manager in a shop like Mary Quant, a natural so that they would make her a manager right from the start. She would have the most amazing shop the city's ever seen. Jansie, knowing that they were both earmarked for the biscuit factory, became melancholic and advised her friend to be sensible about the future.