Amy I’ve typically done what you’re asking by using a Resource Usage type view which by its nature groups tasks by resource and then adding filters to only show not completed tasks with Finish dates less than a specified date. You can configure the filter parameter so it prompts you for a date when you open the view. One thing to note. If you filter, you may end up with just a list of tasks, not showing any grouping by resource name. If that occurs, add a grouping by the resource Name field to force the names to stay in the view.