How to Change the Order of Apps on Your Facebook Business Page
All apps on your business Page, except Photos, can be rearranged from side to side and top to bottom. Four apps, called Featured apps, are visible. When you click the down arrow, you see up to 12 more apps, and called Favorites. You can add and remove apps from Favorites. To rearrange the order of the apps, follow these steps:
Click the down arrow next to your apps to expand all the apps you have available.
Your apps will appear.
Mouse over the app you want to move.
You see a pencil icon in the top-right corner of the app.
Click the pencil icon.
A drop-down menu appears.
From the drop-down menu, choose the app to swap.
Choose whichever app you would like to move from the original order.
Click the arrow next to your apps again to see how the new lineup looks.
You may need to repeat this process several times to get the apps in the positions where you want them. After clicking the pencil icon, you can also choose Remove from Favorites to make the app box disappear.