At this point, the waitlist has dissolved and if you want to adjust your schedule, you will need to use eDrop/eAdd via OneStart.
If you need help, the Office of the Registrar made these great screen print-out instructions:
For eDrop: http://registrar.indiana.edu/pdfs/eDrop.pdf
For eAdd: http://registrar.indiana.edu/pdfs/eAdd.pdf
For all late drop and late add procedure, please refer to the registrar’s guidelines: http://registrar.indiana.edu/dropadd.shtml#late