How do I make a gui only one person can see and click?

I made it so when they respawn, they still have it.

Access = {"hi"}
a = game.Lighting["Name of gui"]

game.Players.PlayerAdded:connect(function(p)
    p.CharacterAdded:connect(function(character)
        for i,v in pairs(Access) do
            if p.Name:lower() == v:lower() then
                a:clone().Parent = p.PlayerGui
            end
        end
    end)
end)

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