Running Multiple Searches
With Meta, you're no longer bound to run only one search at a time. Because Meta lets you open multiple search windows, you can run a number of searches at the same time:
To open a new Meta Search Window, just select "New Window" from the File menu, or press Command-n.
Learning More: Making Use Of The Window Menu
When you have multiple Meta Search Windows open, you can bring an individual window to the front by selecting it from the Window menu.