In Visual Overview, there's currently no out of the box way to show the custom icons.

There's several options to make this possible.

1. Make the icons folder available through IIS, in the same way the documents and webpages are available. You can then use url's to link directly to the image (or even to an html that processes the image).
   Downsides:
   1. No theming will be possible without adjustments made in the code to pass an url parameter for this for instance
   2. Security wise it might not be recommended to open up another folder through IIS just for this.
2. Create a new feature in DataMiner Cube to display the custom icons, with support for theming
   Downside: Implementation cost, as this is a completely new feature.
3. Make the icons available somewhere else link them through the URL.
   Downsides:
   1. 2 locations of images to maintain
   2. No theming will be possible without adjustments made in the code to pass an url parameter for this for instance.