Seldom, except when we on-boarded new people. This was mostly to counter when the folks on one continent would feel left out when folks on another continent were given custom training, and the feeling that institutional knowledge was being hoarded by different teams.

(In reality, they were doing a lot more off-boarding than on-boarding in my last year there. And thanks to agile and daily releases, nobody had any free time to do less important things like training, days off, or sleeping.)