Hi, good news! We do have initial support for custom indicators in PixRiot. Please follow these steps:
1) Create some folder in PixRiot and upload your custom hotspots indicator icons there (drag and drop them there). Note that once everything is configured as per the following bullets, PixRiot viewer will look for all hotspot indicators in this folder, e.g if you use the default ones, they would also have to be uploaded in this folder.
2) Click View button on one of the icons you have uploaded so it opens in a separate browser tab.
3) Copy the icon URL from the address bar and remove the icon file name so the URL ends with your folder name and paste it in the WebRotate 360 Configuration's Graphics Path field as per attached screenshot.
4) Refresh your browser cache. Sometimes you may need to wait a minute or two for the change to propagate to various servers around the world.