Marital status change after Subclass 189 EOI submitted, before and after invite

Hello, During Subclass 189 EOI submission, I said that I am moving alone and do not have children and spouse (which is still true). 1. What is the right procedure to include my spouse, if I marry before the invite? (keeping in mind, that modifying the EOI will move it back in the queue, which is obviously undesirable) 2. What is the right procedure to include my spouse, if I marry [right] after the invite, before visa is granted?