The "packet" is a zip folder containing PDF files of the New Hire's documents that are related to I-9 processing.  There are two ways of downloading the packet: immediately after finishing the Employer Verification task or through the I-9 Console.

After the Employer Verification task

After the Employer Verification task has been completed, click on the zip file icon.

Through the I-9 Console

Click the Menu Icon and click on I9 Console.

Scroll down and click on Download Packet.

Please refer to I-9 Console for the details of what is included in the Download Packet.