I have a FB business page, which I created as a separate page under my personal account. (So at first I log in to FB with my personal data after I can get to the business page.)
I have an Instagram page for my bussiness purposes but I cannot share the pictures of this Instagram page at my FP business page. I only manage to share the pictures of my business at Instragam at my personal FB page.

How could I share at my FB business page?

Thanks