Hi Chef,
You can change your Restaurant wall any way you desire.
  • Tap on the Shop icon which is at the bottom left of your screen. Select the Decors tab.
  • Now select any type of Décor style. Once done, you will have an option to select any Wall from the list of walls.
  • You can drag and place the wall anywhere you like in your Restaurant
  • Confirm the placement by tapping on the Green checkmark.