It is possible that the Route Plan obtained does not consider all the selected vehicles mainly because it is more efficient to make the route with the least amount of vehicles possible, provided that the time range is sufficient for it, and that the load balancing option is not selected

Therefore, if you want more vehicles to be considered, you have two alternatives:

1. On the one hand you can reduce the range of time considered to make your routes, this way it will be necessary for more vehicles to distribute in parallel.
2. You can also use the load balancing option, which will allocate a homogeneous amount of demand between the vehicles, respecting the limit capacity of each one.