Use the commands Planning a new route or Planning a round trip to plan a new route.
So you can immediately start selecting or clicking the route points one by one on the map.
With the command Planning a round tour you plan a new round tour. This requires the Graphhopper routing engine. You can choose from different profiles, motorcycle curvy, car, bicycle etc..
Now you can vary the parameters length and direction, each time you click on Generate until the result fits.