- create the material and animate what is desired:
- create a widget and slap the material onto an image or a border:
- set it as a widget for a widget component:
Or, or, use the actual Throbbers (if that’s what you meant by “throbbed”) the engine came with:
Perhaps there’s no need to faff around with animated materials.
If the monitor you’ve described is more like a CCTV camera thing, look into Render Targets.