You have control over which pages, groups, and games appear in your Shortcuts bar on the left hand side of your Facebook home page, and in what order they appear.
Using your mouse, hover your cursor over the empty space to the right of the word Shortcuts, and the Edit option will appear.
Click Edit to open the shortcuts management tool. You can scroll through the list of shortcuts to find DoubleDown Casino or start typing DoubleDown into the search bar to narrow your list and find it more quickly.
Beside the listing for DoubleDown Casino, use the drop-down menu to select Pinned to Top. Then click Save. This will ensure DoubleDown Casino is always easily accessible from your shortcuts on your Facebook home page.