Starting Up In Auto-mission Mode

Hello everyone,

Can you guide me if and how I can start in auto-mission mode at the start-up? I am trying to do the following:

1- Save a mission in the storage beforehand,
2- Power on the Pixhawk and arm it from QGround Control,
3- Quad should already be in auto-mission mode without me changing it. Then hit start and that’s it.

Thanks a lot!