Input Data greyed out in Dashboard.Input Data field is disabled, preventing Aria Operation from selecting the custom group and applying it as a filter.Aria Operation 8.18.x
In Aria Operations, the reason the Input Data section is greyed out is that the widget is currently in ’Self Provider' off mode.
Self Provider indicates whether the objects for which data appears in the widget are defined in the widget or provided by another widget.
Refer vROps/vCOps Reuse Widgets + Metrics
To fix this and select your Custom Group, you must enable the Self Provider toggle:
Self Provider.On.Input Data section immediately becomes active.