two questions

1. How do i pushback from a gate? When I press shift + P nothing happens and when I move the throttle the plane goes forward.
2. When I end a flight or decide to create a new flight flight plan in midflight, the new plane I use starts out at the same speed andaltitude so if I am at a gate the plane starts to take off. What can i do?
2. When I end a flight or decide to create a new flight flight plan in midflight, the new plane I use starts out at the same speed andaltitude so if I am at a gate the plane starts to take off. What can i do?