KTS is an unified for all Accor hotels SOP for EN department. We have KTS in F&B, HK and FO.
No matter you have set standards, it is supposed to be re-trained to all existing EN staff.
This is how it was done for the mentioned above departments and it should be the same way for EN.
By your explanations below, I understand you are all clear and then you should have no issues on re-training all IHH EN employees.
Please proceed and advise the training topic by topic (excel file) and dead line of completion to HR.