Hello ladies, could you tell me what documents I need to take for mate…

Hello ladies, could you tell me what documents I need to take for maternity leave? For receiving maternity and postnatal payments. I work as an employee of my husband, sole proprietor, all taxes paid. I received a discharge from the clinic, now do I need to open an account at Kaspi and go to the bank? Or can I do it online? And what if I apply late? Because my business is not official, I didn't have a direct job application before the deadline when I should have gone ? So I'm late (Thank you in advance for your help ??)