Short answer: Tell us the site address, the number of people and the time window. We schedule one visit, and the collector tests everyone during that visit.

• Dispatch fee: one dispatch fee per visit, set by when the visit takes place.
• Recurring visits: available for new-hire batches and random selections.
• Ready on time: have the donors and a suitable private area ready when the collector arrives. A donor who is not present counts as a no-show.