The criteria for choosing staff included age, sex, state of health, personal appearance and education they had to at least know how to read and write, and candidates were asked to present a letter of recommendation.
Los criterios para elegir al personal incluían la edad, sexo, estado de salud, apariencia personal, instrucción por lo menos saber leer y escribir de los interesados, a los que se les solicitó presentar dos cartas de recomendación.