Manifold gasket question

I have taken the cylinder head off my 2 1/4 petrol Lightweight for a good de-coke, got a good quality headgasket set and there is the normal full length fibre type gasket, that does both inlet and exhaust manifold to head but there are a further two metal, twin port, metal shim type gaskets. Are these used in conjunction with the other?

composite one piece gasket is a replacement for earlier metal gaskets, use the composite and ensure both manifolds are not locked tight together when you bolt them up to head as if the 2 metal gaskets had been used previously the 2 manifolds will be slightly offset ,

Thanks, all makes sense now. Why have two metal inlet gaskets with a composite one in the pack is anyone guess. Payen set so not a cheapo one.