Yes that's where you insert the pin or "nub" that's missing. So it can fit/rest into the holes in the dial. On mine it's just a short pressed fit pin. Nothing tricky really. Unless I'm not understanding things right?
No, it was me that misunderstood you. You've got it right, only on mine, the fit pin is too worn down to insert into the dial holes and remain secure.
Thanks. This clarifies how it works.
Stephen