How to Add a Class After the Quarter Has Started—You can add courses online during the first two weeks of the Spring Quarter only. After this period, you must complete the late-add process in person at the Admissions Office (Room 1801). Review the instructions for adding/dropping a class during late registration. If you encounter problems or have questions, access www.foothill.edu/reg/onlinereg.php, e-mail Webregfh@mercury.fhda.edu or call (650) 949-7325.