Final answer:
To know if a donor is new and lacks an Easy Scheduler account, staff can check the donation center's database for their details and donation history. If no records are found, the donor is likely new.
Step-by-step explanation:
To determine if a donor is new and has not created an Easy Scheduler account upon arriving at a donor screening, the administrator or staff at the donation center can check the donor registration system or database. Typically, the system will have a record of previous donors, including their donation history and account status. A new donor would not have an established account or a history of donations in the system. The staff can also ask for identification and confirm whether the personal details match any existing records in the database. If no matching records are found, it is likely that the donor is new and needs to create an account with Easy Scheduler.