To understand the different levels of influence lets see a parallel example. In this example we will imagine instead of human beings different types of vehicles: an SUV car, an airplane, a bicycle, a boat, a limousine, a train, a formula one car.
So one day lets say a big factory generates all these vehicles. In this day all of them are "born". The second level of influence (planetary or other type) is the type of vehicle they are. So independent of the influence of the stars a boat will have different life from a train or a bicycle. This happens because the type of vehicle gives already a different use of it. It is different type of individuality lets say. A boat will never have the same kind of life as an airplane even if they will have the exact horoscope to the point. The airplane is made to fly, the boat to float etc Now lets say that all of these vehicles are born in one and the same day and in the same place but as we saw they have different type (different vehicles). But lets assume that they are all manufactured in a time of war, and they are all used in war. So this external condition will create a kind of life for them independent of the type of vehicle or their astrological map of birth. War is happening anyway. This influence comes from the external circumstances of the earth environment and is more dominant in this case than all the other types of influences. This is influence of the first Level.
Also for example 2 vehicles of the same type are born in different places. Lets say 2 boats. One is born in Austria and another in Australia. In Austria there is no sea only lakes. So this boat is destined at least for some time to live and sail only in a certain lake and the other will be used for bigger trips maybe globally because this country has big navy power and is surrounded by ocean. Also this is external influences of first type that predetermines the kind of life regardless the astrological map or type. So in this way if a man was born in Communist Russia he would have to experience the life of the communist country regardless his type or astrological map. Also if you would be born in Alaska or in a tropical island you will have a different life independent of your type or natal chart. This part which is determined basically on external factors is the first type of influences. Another example would be if someone is born in medieval times or even in 2000 BC and another who is born in 2016 for example will live in completely different worlds and this external difference overrides the type and astrological influences (which also of course exist).
Now also exist the astrological influences. So for example 2 vehicles that are born in different place and time and have different natal charts will have different fate on some level although they have different type or external influences. For example because of the chart they will have different buyer who will use it differently. One car will be bought from a rich man that will have it for Sunday use only and another will be a salesman who travels constantly around the country. A boat will be bought to be used as a river house and another for to be rented in a boat renting company for trips to Caribbean islands and so on and so on. These kind of differences will be determined from the movements of Planets and stars: from the 3rd level of influences. And we have the 4th level of influences which is the Cosmic Destiny lets say. It is the direct influence of the Divine Power in cosmic scale that if is in act upon a person (or a vehicle in our example) can override all other levels but in general this influence is very subtle and not so visible in the first place. An example could be like this: The vehicle is born in times of war but it also happens that it is born in the city of Hiroshima in Japan and the day is the day that Hiroshima was bombarded by the nuclear bomb. Now this will determine their life much more practically and directly than their chart in this day or the type of vehicle that they are or the general external factor of the war which is happening . All the vehicles born in this place or living there will be destroyed in an event that is inevitable! This influence in this example is influence of the 4th type.
Of course bear in mind that all these are examples that want to show a little bit the differences in the level of influences. If one wants to understand this reality of life must necessarily study this much deeper and find many examples of different levels of influence in life.