You can apply for NA when you complete your first year nursing courses but there is no certificate for that as lemidora answered. For UNE, I think AHS asks for xxx hours, please consult AHS website for this, which normally means completion of 2nd year nursing courses. However, it can be very competitive and very few people had the opportunity to get in that position. IMO I wouldn't be ready for UNE before I finish my adult health block.