Like the title said: How do i make pepole have ff when they join forever?
Place this in a normal script in the workspace.
game.Players.PlayerAdded:connect(function(p) p.CharacterAdded:connect(function(c) Instance.new("ForceField", c) end) end)
When the player joins the game, it waits for the players character to be added. Once it is added it adds a ForceField object to the player's character.
You can also set the Duration property of a SpawnLocation to a number obscurely high. Scrptury's way is suggested, though.