Navigate to the General Settings: Open Progus Store Locator app -> settings -> general page.
Find 'Search & geolocation results behaviour' section: Select from three options:
Show area in the bounds of found address: Zooms and pans the map to fit the area around the searched or geolocated address.
Show area in the selected radius: Shows all locations within a specified radius. Enter the desired radius in the settings that appear.
Show area based on the number of closest locations: Displays a minimum number of closest locations. Specify this number in the settings that appear.