To be able to access the dynamic ruling screen, you should access it through the Show rules link from the Activity screen. In dynamic Ruling, in this demo, activity Display Allocated result , Processing function linked is this Allocation Processing function. When you want to change for example the Sender Value instead of allocating 100% from your sender, let’s say, you just wanted to change it 50%. You can do it straight from this Show Rule Screen. After changing the value, you can just save then select Run.
Importance of this is that when you are the end user or the business user you might not have the authorization to access or edit the modeling part of the environment so what you can do is to access it from Activity by accessing the Show Rules and then change it from there.
Dynamic Rule is powerful feature that allows end users to change the rule configuration or create new rule at the activity level.