use of humalog pen

hi,

    I'm writing a novel and wanted to know better information on the medication humalog. first, if someone with diabetes 1 has to take this meds as an injection, would they use a syringes? what are pens? what are the normal doses? and last, how would the few second process start and finish? is it safe to say a person with diabetes would need a prefilled syringe with meds in it(humalog), a glucose meter and test strips that come apart from the glucose meter to put in the machince? thanks.