After making a flight plan in Simbrief I usually export it to LNM. There I add my departure stand, save it then re-export it to the sim. I do this no matter what aircraft I’m flying as it lets ATC know what I’m doing and I get the “service” I’m expecting (but doesn’t mean ATC will change the arrival runway/procedure though!).
I’ve noticed that most times the parking spot isn’t shown on the World Map after loading but entering into the sim I’m always at my selected spot.
Leaving LNM running on my second monitor also means I’ve got an out-of-sim view to follow. In VR I use an addon to bring LNM into the cockpit.
I never flightplan from the World Map.