To have a route start at the desired time, the route start time can be forced. Click on the start time and a field will open. The desired time must be entered in the format HH:mm. When it is set, the start time appears in a box and a pin icon |pin_icon| appears to its left.:numref:`route_force_start`
Optimization calculates the best route possible, minimizing costs. Depending on constraints and requIn Global settings, the vehicle start time can be forced. This function implies that the vehicle start time (Time amplitude) is respected. Each route leaves at the vehicle start time. If it is active, a pin icon |pin_icon| appears to the left of the start time of the route, which appears in a box.
Applying zoning means that destinations can be linked automatically by zone, but the route is not optimized. You can reorder your routes manually (see `Ordonnancement manuel_`) or optimize them automatically (see `Optimisation automatique_`).
Optimization calculates the best route possible, minimizing costs. Depending on constraints and requirements, optimization may suggest waiting times, delayed starts etc.