Quality of life
Indicators
Indicators are simply a scriptable object wrapper meant for visual indicators. The only field is for the game object prefab, optionally you can set it up for pooling (which is recommended with a value of 1).
Its purpose is to make it easier to pick when creating abilities.
Creating an indicator
Indicators are scriptable objects and to create one, you'll need to right click on the Project Panel and navigate to Create → Game Creator → Abilities → Indicator.