First open the console, type in getplayerlocation, then note down the coordinates.
Then type in <this command was removed by Smooth>
This works in live servers, however you cannot walk, shoot or interact with any objectives, you also cannot be seen.
You CAN use kira laser, arty strike and place bushwacker turrets.
You’re also able to bind it to get some superEZ scouting information like where they are positioned etc, this does not show up for spectators afaik.