Checkbox - "Enable App Dock"
Slider - "Icon Size"
Checkbox - "Drag and Drop"

Tie the visibility toggle of the layer "App Launcher Dock" to "Enable App Dock".
Tie the slider from the same layer called "Base Icon Size" to "Icon Size".
Tie the "is Movable" toggle from the layer "Drag and Drop" to the "Drag and Drop" property.

Optimally each icon should have it´s own controls to allow for quick removal/change of any icon.
We need one "Checkbox" and one "User Shortcut" property for each icon (16 by default).

Optimally you title these properties
Checkboxes: "Enable #1", "Enable #2", "Enable #3", "Enable #4"...
User Shortcuts: "Launcher #1", "Launcher #2", "Launcher #3", "Launcher #4"...














Wallpaper Engine will automatically create a key for the property by removing capitalization, symbols and spaces. If the first symbol happens to be a number then it will add a "_" before it.

Each "Enable #" needs to be tied to "Enable #" found on the "Background | Logic" layer.

If you did not title your user shortcut properties "Launcher #" then you need to go into your project settings, open up the user shortcuts and look at the key of the property.
Mind that the key is the grey text underneath the textbox where you edit the property Title that is visible to the user
Each icon layer has a textbox which needs to contain the exact key (not title) of the property it should trigger when clicked.

For icon layers to use the texture provided by the shortcut you also need to tie the icon layers texture (click the texture box all the way at the bottom) to each "Launcher #" user shortcut property.