How to change name and image for Facebook tabs
When you have installed Make Advent Calendar on your Facebook Page, you can easily change the name and the icon for the Advent Calendar app on Facebook. Simply start by entering you Facebook Business Page, and then click 1) Manage tabs.
Then click 2) Apps, and 3) Edit Settings under Advent calendar 2016.
Write the name you wish for the tab 4) under Custom Tab Name. Then click 5) Save. If you wish to change the image of the tab, just click 7) Custom Tab Image, and then follow the instructions given. Click 7) OK to close the window when you are finished doing changes.