I'll list everything I tested that DOES NOT work. I could not test everything, mainly due to lack of a friend I couldn't try all things in the "Other Players" section.
Personal Tab:
"Off Radar"
"Anti NPC"
"Clone Bodyguard"
"Explosive Melee"
Vehicle Tab:
Anything on the right-hand side can't be done. (Meaning: GodMode, Tuning, etc.)
Gun Tab:
"Gravity Gun"
"Vehicle Gun"
"Give all Mk2 Weapons"
Teleport Tab:
"Teleport to vehicle"
"Teleport to nearby car"
Other Players Tab:
"Teleport to Vehicle"
"Clone Bodyguard"
"CEO ban Player"
"Kick Player"
"Black-Screen Player"
"Force stop Player"
List keeps updating itself; You accidentally modify the wrong player.