This will find GMAP Coordinates for list of companies in "HR and Client meeting details" drive sheet

Code.gs

function setCoordinates() {
  var coordinateCell = "Q";
  var addressCell = "P";
  var companyCell = "A";
  
  var coordColNum = 16;
  var addrColNum = 15;
  var compColNum = 0;

  // if true then it will replace coord with new values
  var keepOrgCoordFLAG = true; 
  
  
  var sheet = SpreadsheetApp.getActiveSheet();
  var rows = sheet.getMaxRows();
  var values = sheet.getRange(2, 1, rows-1, 16).getValues();
  
  var latLong, company, address;
  var coordinate;
  var self = this;
  
  values.forEach( function(currRow, index) {
    var contentCount = currRow.length;
    address = currRow[addrColNum];
    if (address == '' || address == undefined) // address is absent
      return false;
    else {
      coordinate = currRow[coordColNum];
      if(keepOrgCoordFLAG && coordinate != undefined) 
         return false;// if not ask for any update in current value of coordinates

      company = currRow[compColNum];
      
      coordinate = self.getLatitudeLongitude(company, address);
      
      sheet.getRange(coordinateCell + '' + Number(index+2)).setValue(coordinate);
    }
  });
}

function getLatitudeLongitude(company, address) {
  var locationInfo = company + ", " + address;
  
  geoResults = Maps.newGeocoder().geocode(locationInfo);
  Utilities.sleep(1000);

  // Get the latitude and longitude
  if(geoResults.status == "OK") {
    var lat = geoResults.results[0].geometry.location.lat;
    var lng = geoResults.results[0].geometry.location.lng;
  
    return '@' + lat + ',' + lng;
  }  else return '';
}

// test doc link : https://docs.google.com/a/synerzip.com/spreadsheets/d/19j88E_KcVAGyWZd7FjT3lVTYEslpFOn7mNQNZdOo8YE/edit?usp=sharing