ok this has been driving me bonkers the last two days. I load up a flight plan in FS2020 (built using little navmap) and select a random starting location (since you don’t know where they are).

the sim loads up, and you realize you’re in the wrong spot! How can you quickly change your starting gate/parking location? currently only way i can figure it out is to completely back out to the main menu and start all over again, which is causing me to pull all of my hair out 😵

someone smarter than I please let me know how achieve this

on the airport, instead of clicking set as departure, you click zoom to details or something like that. Then you can select any parking spot. You will then start cold and dark. 

i also found out there's a "slew" feature that allows you to move your plane anywhere. it moves very fast but can allow you to move your plane to the perfect spot on the ground. press 'Y'