After entering your search criteria, click on the Mapping field.
Click on the mapping address search bar.
Type in the address you would like to be the center point of your radius. Then click the blue magnifying glass icon or press the Enter key.
You will now notice a small blue flag with a number on your map marking the address you just searched.
Now type in the number of miles you would like your radius to be in the Miles field next to the address search bar and then click Search Radius.
Your map should now have a dark grey tint to it. This indicates you successfully added your radius to your map and can click the Search button to view your results.
Depending on the size of your radius, you may have to zoom out to view the full shape on the map. You can do this by clicking on the "-" symbol in the lower right corner.