How can I make this button script work for a group rank only?

Here is the script

script.Parent.MouseButton1Click:connect(function(GetCar)
		Mod = game.ServerStorage.test    --Change test to whatever you have named the item you want to spawn
		clone = Mod:clone()
		clone.Parent = workspace
		clone:MakeJoints()
end)

You can achieve this by using the GetRankInGroup function of Player.

local Player = game:GetService("Players").LocalPlayer

local Button = script.Parent

local GroupId = --// Enter Group Id
local GroupRankMargin = --// Rank Priority # (1-255; 255 as owner)

Button.MouseButton1Click:Connect(function()
if (Player:GetRankInGroup(GroupId) >= GroupRankMargin) then
		--// Code
	end
end)

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