In Layer properties 
, for layers that have custom parameters available, you can configure the those parameters to specify the visualization of a layer in the layer properties pane.
To add a custom parameter to a scene, complete the following steps:
- In the layer properties pane, under Custom parameters, click Configure custom parameters to open the Custom request parameters pane.
- Click Add parameter.
- Provide the name of the parameter you want to append in the Parameter text box.
- Provide the parameter value in the Value text box.
- Repeat these steps for each parameter you want to append.
- Click Done to apply the changes and return to the layer properties pane.
The specified custom parameters are automatically applied to all requests made to the service.
- Click Done again to return to the Layer Manager pane.