I need new staff to stay longer and be useful more quickly.
New staff who leave before, or just after they’ve become proficient is expensive and very “frustrating”. They’re either leaving because it’s the wrong job for them (bad recruitment), they’re the wrong people for you (bad recruitment), or because they’ve not been looked after and trained well enough (onboarding).
If you’re looking to keep them longer, make your onboarding process more systematic, more suitable for introverts, and more obvious to all staff (so they all see development opportunities).
Creating a programme (checklist of subjects, dates and people) allows you to systemise your induction programme, so you don’t do all the work and your new starters get a consistent, high quality, start to their career with you. That will make them more likely to stay for longer and more productive more quickly.
Help introverts (and everybody else) find their feet in the company more quickly.