1. In NXT go to Lists>Constituents
2. Click the Filter icon
3. Select Location
4. Click Filter using map view
5. Enter a Search item to narrow in on the area viewed on the map, i.e. South Carolina and select it when it appears below the Search window
6. This will change your viewing area of the map
7. Use the Rectangle Area or Custom Area options to draw an area on the map you want included as a filter
8. Click Apply filters in the lower left corner
9. Click Apply Filter on the Filters window

NOTE: You can draw multiple shapes on the map to select multiple areas, just click Rectangle area or Custom area each time.