You cannot nominate from the website, you need to go throught the chain of command i.e. BTC, GTC, RTO. From experice of preforming all of these role at times that any breakdown in communication will result in people missing out on oppertunities. I know I have certainly asked down the chain for nominations for the courses you are after Alex without any luck. Use the website to find spaces and then hammer your BTC, GTC to get your nomination to region. Your nomination should appear in your members profile once it reaches Region, even if you are not allocated to a course i.e. Pending. Also if you do get on a course and things change let the region/STC know straight away to allow more time to refill the place.