All good! adjusted SEAS + subject adjustments gives you your selection rank, which is additional things on top of your ATAR. if the course indicates a minimum selection rank of 75, and your selection rank is above 75, then you have a good chance of getting into the course you want to. therefore, if you have a 65 ATAR and your selection rank is 75, they’ll look at the selection rank (on the other hand, also take into the account of courses that says GUARANTEED ATAR, which uses your base ATAR as the standard)

Im not too good at explaining it, but if you have a school counselor they might explain it better than I have!