Ultimate Facebook Plugin - How to post to a page?

I am using the Ultimate Facebook plugin. It is posting to my personal wall, but I want it to post to a page - not from my personal account.

I manage a very large writing site. Writers post stories to my site (custom post type). I want those posts to be auto-posted to my site's PAGE on Facebook - I am the admin of that page.

I've created my app: Successfully connected to <mysite's FB page>

The pertinent settings:

You already granted extended permissions

Allow autoposting new posts to Facebook
Allow frontend autoposting to Facebook

Autopost STORY SUBMISSIONS to FACEBOOK WALL
of this user: MY PERSONAL ACCOUNT

And this is the problem with these settings: 1) There are only 2 options for STORY SUBMISSIONS a) facebook wall or b) don't post. How do I select MY PAGE. 2) Will postings submitted by other writers show as MY account posting, or their account posting.

I appreciate any guidance to get this set up correctly.

Thank you!