If you did not receive an offer during main round offers but you have met entry criteria for your preferences, you may wait until second round offers for another chance of receiving an offer to your first preference. However, it is recommended that you include a non-competitive course in your list of preferences that is a suitable back-up course or alternative pathways.
If you did not meet entry criteria for your preference(s) you can add a different course to your list of preferences.
You can add/remove preferences until the deadline for second round offers (See TISC's Important Dates webpage).