Flights To Rome How Do I Add Time Between My Connecting Flights?

How do I add time between my connecting flights? - flights to rome

I fly to Johannesburg, South Africa, and the flight is in Germany on the road, and in France on the way home. My friend and I had hoped to stop-overs and a week in each country. Is it possible that we set the stop time in flight with a hotel with our four flights were completely different? if we each flight in itself is something like $ 7200, and together as a combination of only $ 1700th Tips, stories of experience welcome. Thank you.