Once had a user manually change their ticket to Priority 1, which we used to indicate dozens of people/everyone down, because their M key only worked half the time they pressed it.
Electrician at a factory, I get called to operator's stations all the time because "I can't type any numbers so we can't change products." I have tried for 30min over the radio to direct them to press the numlock key to no avail. Please send help, I can only drink so much on my day off.