If my needs are slightly different, like I want to use my preferred airline on a business trip, how does that work?
Most network listings have a semi generic format of the Product or Service, and you negotiate the finer details with the winning vendor. So you could customize your Laptops with a higher spec, or a winning Corporate Travel agent will have all the preferences in a Travel deal and their winning price should include this.
Or a Travel network deal might have additional fields to enter your preferences like a 5 Star Hotel with Pool view or ask you to suggest a preferred airline if you have one.
In short, don’t sweat this too much as you can always negotiate as above, the finer details or specs.