The rule doesn’t state WHO returns the object just that it will be returned. Common Sense would imply that the referees would return these game objects, however during the Singapore Competition, Drive Team Members and Spectators often returned these objects. It is understandable that teams would want the game objects back in the Field as soon as possible, however there’s the question of bias and a team returning an object so it is advantageous to their alliance. So, are non-referees allowed to return Game Objects to the Zone they last left, or do only referees have that ability?
It is expected that referees will be the ones returning the Scoring Objects to the field. However, referees may designate other field personnel to assist with this. Drive Team Members should never be doing this unless they have received permission from a referee.