At this point, all the possibilities for customizing the interfaces are explained. First, it describes how the folder structure is structured and how the JSON file is built up. It also deals with individual fields and how to set up tables in the system. It explains how the menu is structured and how the context help is structured. This information can be very helpful when customizing the software. Furthermore, the UI editor is explained and what other customization options are available. Furthermore Ingrid editing is described so that you can also customize it.