WHEN? As soon as you have enrolled in your secondary institution HOW?
Go to the financial aid office.
Request your Student ID AND the name and address of a contact person in the financial aid office where your scholarship check will be sent.
All of this information needs to then be emailed, handwritten, or called to: the "Contact Person" for your scholarship.
WHERE? Find the scholarship(s) you have won on the graph below. Next to it will have the information for the contact person, a mailing address, and email and telephone number where they can be reached.