For people who have downloaded project from Prometric, you need to write to Oracle. They will provide a replacement voucher that you can use to upload part 2. Once you have uploaded part 2 you will be able to schedule part 3.
To see part 2, select Master Assignments in the link provided below.
https://www9.pearsonvue.com/oracle/schedule/index_en.asp
Once you click on Master assignments, you will be provided Pearson login screen. After login you will be able to see 1ZO-848. Select this test & fill voucher number provided by Oracle. Once you have provided voucher, you will be shown screen to upload assignment.