How would I say "How far back do they want me to go?" The context of the question is that I was filling out an application where they wanted my work history. I was attempting to ask the person helping me "How far back do they want me to go in my work history?". The best I could come up with was "Que tan lejos para atras quieren que voy con mi historia de trabajo". He understood what I meant but I am certain this was nothing close to correct.
I would say something like this (I'm using third person singular because I suppose it is in a very formal environment so I would use "Usted" as subject):
If you want to detail it from the past to the present:
¿Desde cuándo quiere que detalle mi actividad laboral?
If you want to detail it from the present to the past:
¿Hasta cuándo quiere que detalle mi actividad laboral?