I live in IL until October and then I moved to GA (WFH for the same company in IL). My w2 has both IL and GA info. Am I qualify for "credit for tax paid to another state"

Also, I filed jointly with my husband. My husband worked for a GA company during the whole year. if we do qualify for "credit for tax paid to another state" should i add his income and tax in GA there?

And I don't understand what "allocate your illinois and non-illinois amount" means. Under Illinois amount, should i provide how much i received when I lived in IL? "non-illinois amount" means the amount i received in GA when i lived in IL?

thank you!