Affiliate Marketing Secrets

I’m applying at two bookstores: Barnes and Noble, and Half Price Books.
I never am sure what to put for the position applied for, as I do not know all of the positions affiliated with the jobs. I was told I could just put down “open” and that would suffice, but one of the applications says “Response Required” under that field, so I am not so confident that “open” is what they are looking for.
Do they just mean hourly, salary, or management etc?
Also, if anyone happens to work in either bookstore, or any other bookstore for that matter, how do you like the job? I work in fast food currently, and I’m sure anything would be better.
Thanks for any help!