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Once done, disable the edit mode by clicking on the edit icon again.
Click on the Add Layers button in the LayerTree.
Two buttons appear. Clicking on Search opens up a search bar. By default some layers are shown in a dropdown that can be added to the LayerTree and the Map.
Click on a layer to add it to the LayerTree and the Map. The "add" icon () changes to the "checked" icon () when the layer is clicked on.
Alternatively type in the keywords for the layer you want to find. Further information about the layers can be viewed by hovering over the layer entry in the dropdown.
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