أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
What is the real problem here?
Do you need more training to be a good manager? Or do the staff need more training? Does the team need more resources? Did your predecessor hire the wrong people?
Your letter to the management head should explain the problem and also the solution, including the approximate cost and timescale.