Evaluate and Analyse
To effectively determine your training needs, it is important that you anticipate any changes that might be up and coming (e.g. maternity leave, promotions, etc.), to analyse and dissect the root cause of any poor performance. This can then detect the training required to get your team back on par.
Similarly, it is important that you understand that not each member of staff requires the same training and that setting unrealistic goals and targets is detrimental to individual success and morale.