Go and have a look at that mate.
You might find there is an automatic membership which gets them on the books.
I had to join the FTO's club when I did my CPL/IR.
Its a legacy thing they say everyone has to be members then don't define what a club is. Which for some places is just a list of names that everyone gets added to and others its a revenue generator.
I don't have a clue if this changes with EASA