OpenIDM Integrator's Guide
Chapter 4. OpenIDM User Interface

By default, the UI is registered at a specific URL (base-context/openidmui). To override the default URL and specify your own path, edit the openidm/conf/ui.context-enduser.json file, setting the urlContextRoot property to the new URL. For example, to change the path to base-context/exampleui, edit the file as follows:

"urlContextRoot" : "/exampleui",