Some reports require multiple run-time values, like a country list, for example. Selecting a handful of country names from a long list can be difficult. To address this problem, Administrators can create parameter value groups, that allows a user to select a group that includes multiple parameters.
Examples of parameter value groups:
At run time, when a user selects a group, values belonging to that group will appear as selected. User does not have to manually select each of the countries every time the user runs the report. This saves time, as well as reduces the chance of errors.