The fix info that we added in the CDU will appear on our navigation displays when we get closer to our destination.
The dashed green line on the screenshot is the extended runway centerline. This is a lateral guide that points us to the runway. On final we should fly along this dashed line.
The inner dashed circle is the 5NM range ring. This is the range to the runway threshold at which we want to be fully configured for landing, gear down, flaps 30.
The outer dashed circle is 8NM away from the runway which is roughly the distance when we will intercept the glide-slope of the ILS.
Tip - When flying manually you can position yourself at the intercept point of the 8NM range ring and extended centerline, at 2500ft with a speed of less than 200kts and you should be able to capture the localizer and glide-slope with relative ease.