Everyone sits in a circle and sends one person out of the room (or somewhere where they cannot hear the rest of group). The group then decide on a job to give that person. The job can be anything; janitor, police person, bus driver, architect etc.
Once you have agreed on a role for this person you invite them back into the circle and then the group will ask them questions related to this job, to see if the person can guess what it is they are being interviewed for.
For example, if you decide that the person will be a police person, when they come back into the circle you might ask them questions such as “Are you good at handling conflict?”, “Are you a good driver?”, “Do you like wearing a uniform?”
The trick is to ask them questions that are not too obvious – be discreet or slightly ambiguous and vague. The person in the middle can answer how they like, but must try to answer formally as if they are in an interview situation. Some of the answers (and questions) might be funny! At any point, if they have an idea what their job might be, they can take a guess.
You can randomly pick who goes out each time, or ask for a volunteer. It can be helpful to pick the more confident young people to start with, as it gets the game moving and gives quieter members of the group more of a chance to contribute to the questions. Play a few rounds to give several people a turn at being interviewed