Sorry for the delaying response, however, I don't understand what are you expect to do, can you please explain with more details?
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The Big Data Sandbox is a self-contained VM designed to highlight Talend's capabilities with Hadoop and Spark against some of the top Big Data Distributions. It does not, however, contain the full Talend Platform of applications. It sounds like you are interested in Talend Administrator Center (or TAC). For this type of Demo/POC, please reach out to your Talend Account Executive and they should be able to help you.