Possible Clues:

• Temporarily keeps an eye on the issues raised by The Guardian and 2 down - the poseur
• First job, for many teenagers
• One left in charge of home brew conceals almost catastrophic situation
• One's charges might be small, in more than one sense
• First job, for many
• Caretaker whose responsibilities are little ones
• One making charges for the sake of charges?
• Saturday night hire, often
• Part-time job, for some
• First job title, for many teenagers