How do you insert a model into the game from the lighting?

You would use one of the following functions:

MoveTo() TranslateBy() SetPrimaryPartCFrame()

SrtPrimaryPartCFrame requires you to set a primary part before you move the model.

Set the Parent of the model to workspace.

Finally, you should be using ServerStorage to store things not Lighting.

You need to use Clone

Also, i would recommend not storing anything in lighting. As KritikalGunzz said, use ServerStorage or ReplicatedStorage Instead

Yah, when you use the script

Clone() Means you clone something like if you click something

short example:

local Click = Button.MouseButton1Click:connect(onClick)
local Button = game.Workspace.Model1.Button

while true do
function onClick(Button)
game.ServerStorage.Model1:MoveTo(StarterPack)
end

sorry hard to not script without testing on roblox, but I have a game and all of the tools don't work in Lighting. I use Lighting for placing GUI's sometimes or a model that falls from the sky. Server Storage is a storage for the server so it is a good place to store