This is very helpful information. Thanks for sharing 👍Yes they can, my wife is the primary applicant but stayed back in Holland due to ongoing research project. However, I entered Australia without any hassle. Need to quarantine for 2 weeks though. Make sure get enough play games to engage your kids. I would recommend check govt website for fees and other requirements (if changed). Watch couple of YouTube videos what to expect in quarantine.
P.s. I arrived at Sydney on 20th may 2021