How to add layers to the map.

1. To add an existing layer go to the "Content" tab and click the "+" icon on the right side of the blue banner.
   
2. A dialog box opens where you can see the list of layers to which you are allowed to access or are publicly accessible. Browse through the layer list or create a filter to limit the number of displayed layers. Select one of the layers (by clicking on it) and press the "Add" button (in top-right corner).
   
3. All added layers are visible in the "Content" tab.
   
4. Adding a layer also enables it - its features get displayed on the map.