This is easy.
If you are submitting your album for the first time:
You will have an option during the album submission process to authorize Facebook / Instagram.
If your album has already been submitted and distributed:
Simply login to your dashboard at Catapult and click on the album in your catalog that you would like to authorize. On the next page, click the "Stores" tab and scroll down to "Facebook / Instagram" and select "Authorize". Once it's authorized, our system will automatically deliver it to Facebook / Instagram.