There are many different ways to use walls on the iPad. A common way to do this is to use an iPad wall holder, which can be fixed to the wall, allowing the iPad to hang securely on the wall.
Another method is to use a magnetic wall sticker, which can be glued to the back of the iPad and then attached directly to the magnetic wall.
Another option is to use an iPad wall mount, which attaches the iPad to the wall and provides Angle adjustment. Whichever option you choose, you need to make sure the iPad is securely attached to the wall and easy to use and operate.