At most, you only need 2 keys. One to switch to fixed cam mode, another to switch to the fixed cam you want. Once you are seeing a fixed cam number. If you switch between cockpit view and fixed cam view. You can go straight to the last fixed cam position with just a single key. So it’s either a single key at least, plus another key if you want to choose a different one. So it’s just 2 keys at most.
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