answer:Uh, you know a metric assload about purchasing (don’t you grocery shop? wait for sales? have you ever negotiated for a lower down payment on an automobile?). Business management, I know you have experience there. I mean, without knowing what you’re applying for I can’t really tailor your responses, but literally anything you’ve done once is a “supplemental skill”, you just have to figure out which ones apply to the job you’re doing. “Interpersonal communication” is always a good thing to add. It just means you can carry on a conversation with your workmates without either one of you wanting to kill the other by the end. “Decision criteria” is rough. I’d be tempted to be honest and say whether the schedule and salary/benefits fits my needs. I’m not even a little into this idea of claiming work comes before family for the sake of an interview.