SAT Center Selection is a crucial part of the SAT Exam, As we know the SAT is a paper-based standardized test (Offline Mode).
You need to register for your nearby SAT Center through College Board website.
Once the SAT Center is selected and Hall Ticket is downloaded, you are supposed to write the test at SAT Center and fill in your responses in the OMR sheet provided by the center.
After filling the basic details, test dates, & country… you can request for your nearby SAT Test Center, Your SAT Test Center Selection would depend on seat availability there.