And from John Hughes, the author of Success with BEC Vantage:
"If I understand your situation correctly, you are preparing students on a relatively intensive program. In which case I'm afraid I have to give you the 'obvious answer' of making selective use in order to go faster and this is what other teachers do.
However, with regard to what you use, I think you have to make sure you do the Exam Spotlight sections in class because you need to be certain that all the students are familiar with every part of the exam and know the exam techniques they need. If this then means that certain parts might be missed from elsewhere in the units I'd set homework from the book. Typically, the section where students can do the work on their own is from the opening Business Topic spread where there is usually a reading and some vocabulary work. My approach would be to ask students to study at home before the lesson where I intend to start the unit. That way, I can still do any speaking tasks with the students and talk about the reading which they have prepared.
I appreciate this isn't the ideal way but - as usual with teaching - there usually has to be some compromise involved!
John Hughes (Success with BEC Vantage)"