How to post on Facebook, Related Posts?

[Frome]

Go to the page you wish to advertise on. Like the page. Go to your profile. Make a status update with what you want to post on that page's wall and mention the page using @Page's Name. When you type @xyzetc a dropdown list should pop up with suggestions. Choose the selected page from this list. It will then make that item blue in your status. Post your status. You will be able to click the blue. Click it; it will take you back to the page and under "related posts" should be your status.

Edit:
If you have a Facebook Page yourself (for your catering business) that you want to post on the "related posts" then follow the same steps as above. Instead of a status though, choose to share a link. Copy the link from your Facebook page or website and click attach. Then talk about it in the "Say something about this link" box, making sure to use the @xyzetc to mention the page whose "related posts" you're trying to get on.