This simple UI Procedure just shows a custom message to the user and waits for a reaction.
In AggreGate Client, this UI Procedure shows a popup dialog with a single "OK" button:
Grouping Support
This UI Procedure supports action grouping. With action grouping, messages provided for the UI Procedure by different actions in a group are shown together.
In AggreGate Client, a single popup window is used in this case:
