User needs to load the data in parallel for a TPC-H test.
1. Go to Edit | Settings.
2. Choose the Benchmarks tab.
3. Double click on TPC-H.
4. Click on the Advanced tab.
5. Check the Use advanced option... check box.
6. Select the object name of choice and click on Edit options.
7. The mapping options page will appear, allowing you to set several properties including a check box for Parallel.