From the ion menu, there are multiple ways to access available data walls.
Method 1: Click on the blue Data Wall icon.
Method 2: Click on Data then Data Walls

Wall Actions
Depending on your ownership of a given wall, you will see up to three icons to the right of the wall name.

The green "pencil" icon allows the user to edit a data wall.
The purple "copy" icon allows the user to make a copy of a data wall.
The red "trash" icon allows the user to delete a data wall.