Sorry for the late reply, due to previous reasons I could not reply until today.
If by workbench you mean the tools that are available to me, I can only say, as a total beginner, that all tools are available as far as the LiveCycle ES4 version is concerned.
Otherwise I would appreciate an example file to see how something like this is done. Unfortunately, as a beginner, I can't do much with technical terms and just a Java script.
This is the suffering of a self-learner 😊
Thank you for your time and patience.