In ArcGIS Pro, any layer dragged into the ‘2D Layers’ section in a Scene will automatically be draped across a suitable ‘surface’. Meanwhile, layers within the ‘3D Layers’ section will be rendered according to their full 3D geometry.
In AGOL, however, things are handled slightly differently. Here, there is no need to place the layer under a particular heading. Instead, styling/rendering behaviour will be defined by choices made within the ‘Layer style’ and ‘Layer properties’ panels. Of these, ‘Layer style’ defines the core rendering options.
To access the ‘Layer style’ panel, the Layer Manager panel first needs to be selected from the side bar, as shown:
Each listed layer will have further options that will be exposed via the ellipsis ( ‘…’) icon. ‘Layer style’ can be found at the top of this list.
Selecting ‘Layer style’ should then open this interface:
The ‘Layer style’ panel will typically include an option relating to attribute-based classification, along with several ‘drawing style’ choices. Each of these choices, once selected, will then reveal a further set of options and settings.