Position expects everything except what I pick?

Hello! On line 16 it says that it wants CFrame but it's vector3. I change it to vector3 and then it asks for CFrame! Help!

local owner = game.Players.iiDkOffical
local head = Instance.new("Part")
head.Name = "Head"
head.Anchored = true
print("Made Part")
local group = Instance.new("Model")
group.Name = "Unknown"
group.Parent = game:GetService("Workspace")
head.Parent = group
local humanoid = Instance.new("Humanoid")
humanoid.Parent = group
print("Made group")
head.Size = CFrame.new(1,1,1)
while true do
wait(0.25)
group.Name = owner.Name.." - Camera"
head.CFrame = game:GetService("Workspace").Camera.CFrame.p
end