When creating a new scenario test, adding options for a scenario creates a series of runs from a cross-product of the specified options for that scenario. This feature allows you to test many different scenarios quickly, however, the cross-product functionality may produce runs with configuration combinations that you do not care about.
Before, you would still have to run the scenario test with these options and then either ignore them in your analysis or filter them out. Now, before creating a scenario test you have the option to review the runs that will be created and deselect the runs you do not want to use.
Once you have selected only the runs you want to use for the scenario test you can click Create scenario test like normally. Note that reviewing runs is an optional step, if you want to use all of the runs you can continue to click Create scenario test like before and bypass the review runs step.