Richie,
To add to Bealzebub's reply, you said you: "thought you are taught all these when you are doing IR."
I doubt that any aircraft which is used for initial IR training is capable of doing a Cat 2 or Cat 3 approach, although I may be proven wrong. No, it is certainly not taught as standard.
Hope that helps - and there's no such thing as a silly question!
FFF
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