For Self-Service Applications check out Prompt Saver under products at www.moonlightware.com .. There is even a working online demo. The demo uses your IP address to store parameters.

Many thanks for your help.

WebFOCUS Developer Studio has a Saved Parameter Selection button in the HTML Layout tool.
You can save parameter selection values as a My Report for reports that run immediately or run deferred.
By default these reports are saved in the Saved Parameter Reports folder which is automatically created under the My Reports folder, but you can save parameter reports anywhere in the My Reports folder structure.
When you select Run from the menu options for Saved Parameter Reports, the saved values are used to run the report and the prompt form does not display.
When you select Edit Parameters, the prompt form appears so you can make changes to the values before running the request.
This can easily be setup.