...
- From map – if the layer that you want to geocode is already in the open map you can use pick it from this drop-down list,
- From file – use the layer from saved file. To do this, click Select and find your layer.
Second thing is to choose Geocoding columns. If your layer contains Easting/Northing columns, you should check the 2nd radio button and geocode by them. If not, you need to select columns that contain data about an address (because whole address data is a unique thing for each record). It is required for a valid UK postcode to be provided for each address.
...