Adding Your Facebook App to a Business Page
When you create a Facebook app, you want to make it available to as many people as possible. To do that, add your app to a tab on your Facebook business page. Tabs appear below your cover photo, so visitors to your page can find them easily. To create a tab on one of your business pages, do the following:
While filling out the Basic settings form when installing your app in Facebook, select the Page Tab check box to open that section of the form.
Fill in the Page Tab Name (the name of your app as you want it to appear on the page), the Page Tab URL, and the Secure Page Tab URL.
These last two should match what you typed for the Canvas URL and Secure Canvas URL in the App on Facebook section of the form.
Save the form.
While logged into Facebook, go to the following URL (replace your_app_id with the Facebook ID for your app and your_canvas_url with the URL for your app on your web server:
The URL takes you to the Add Page Tab dialog box.
In the Choose Facebook Pages drop-down list, choose the page from which you want to install the app, and then click the Add Page Tab button.
Facebook adds the tab to the requested page.
After you install the app on your page, it appears as a thumbnail image below your cover photo, as shown here.