QAD 2017 Enterprise Edition > User Guides > System Administration > Customizing Business Logic > Introduction to Customization
  
Introduction to Customization
You can customize component-based QAD applications after installation in a number of ways:
By using the Design Mode feature to customize the user interface during run-time
By creating user-defined fields and adding them to the interface
By customizing business component code using a standard Progress editor
These first two options let the user or developer add fields and modify forms in the current UI. You can also use built-in .NET features to customize components such as searches, browses, and reports. These options are described in UI Customization. For more information on browses and stored searches, see Introduction to QAD Enterprise Applications User Guide.
See Customizing Specific Business Components for information on customizing the matching logic for Processing Incoming Bank Files and customizing tax ID validation.
This appendix describes how to customize business component code for an installed application using a standard Progress 4GL editor.