Which of the following is a best practice for onboarding newly hired salespeople?

Cover everything they might ever need to know and then provide review sessions later on to reinforce what they learned.

Have them start selling immediately and then coach them on the mistakes they make.

Cover the things they need to get started and train them on the rest later on when they need it$.$

Get input from every department at your company to ensure your onboarding program is truly comprehensive.