You shouldn't need to do anything to receive the ORC payment. That part is all automatic. The NHSC already has a list of costs that are required to attend your program. Based on that, they will determine the amount that the ORC is. They will go over this during the webinar.
Just as an added layer of reliability/security for my answer on this question, I watched the recorded webinar from a previous year to verify my answer and during the Q&A session at the end, there were two questions dealing with this specifically. They were:
1) Q: Can you reiterate our responsibilities for the ORC? Should we submit itemized costs to our school?
A: You do not need to submit itemized cost to the NHSC regarding your ORC. The amount that you will be reimbursed will dependent on your disciple, year in school and the information that your school provided to the NHSC.
2) Q: My school said they only bill for tuition and fees, so how do I get the ORC costs that are covered by NHSC over to NHSC?
A: you do not need to submit an itemized list to the NHSC regarding ORC. The amount that you will reimbursed is dependent upon your discipline, your year in school and the information that your school provided on the data collection worksheet that was submitted to the NHSC.
Also, just as a bonus, they give you the money to purchase a new computer your first year as well.
I hope this helps.
Link to the webinar recording:
NHSC New Scholar Welcome Webinar Recording