Setting Field Based On Another Field

Question

I am trying to set a field based on the value of another field in the same module. I've set up a Business Rule that shows the mapping of one field to the value that the other field should have. Then I have a simple Business Process that evaluates the Business Rule and sets the other field. Is this be best way to accomplish this? Are there other approaches? 
 Here is the Business Rule I'm using to test: 
 
 Here is the Business Process I wrote to evaluate the business rule Condistion / set the field Conclusion. I believe the Return Value is not used here. 
 
 Thanks for any feedback on this. VO

Vince Outlaw · Accepted Answer

that should set area westcoast category without gateway like this sets RLI Type on RLI Lead Source Change: 
 
 And that is how it works:

Vince Outlaw · Answer

Despite the Process Definition in this case performs as an algorithm rather than a workflow, it provides the maximum visual configurability and maintainability for Sugar Admin in comparison to the code - even in the case of such a simple business rule criterion and very simple operation. 
 IMHO, it is a very reasonable option for setting editable field values automatically on data save - to employ SugarBPM included in the subscription.