[XAF] How to define a business class at runtime or allow end-users to configure its members via the application UI?

How to define a business class at runtime or allow end-users to configure its members via the application UI?

https://www.devexpress.com/Support/Center/Question/Details/T284822

Customize Business Object's Metadata

https://documentation.devexpress.com/#eXpressAppFramework/CustomDocument113583