Australia / Poland residency for an Australian citizen without marriage? [6]

hi guys, I am an Australian citizen. My partner is Polish, we have been together 8 years and legal partners in Australia for 7 year we have 2 kids with Polish passport, we speak Polish at home. I lived in Poland for 1 year 5 years ago and have been 12 times. Just wanted to know if you can get residency without actually getting married (I'm philosophically opposed to it), in Australia its no problem. Or through the kids if they are both Polish citizens? can you apply wile overseas or do you have to be in Poland? can you leave Poland while waiting for residency? I will have to travel for work.

dzięnki everyone