I don't know what a decal is. Anyway, we didn't have this thing before, so it shouldn't be the key.
3. If you pass the exam, some training will not be tested at all, and you will be given a certificate of continuing education. Only the name of the person, the date of participation, and the class hour have the seal of the training unit, which is useful anyway.
In fact, you don't have to worry about this continuing education certificate at all. It's not personal behavior, the unit will do it for you. Invalidation of the security officer's certificate will only benefit you, not harm you. Do you think you really know about safety? If something happens, you have to bear it. Although the company bears the main responsibility, once something happens, you are also jointly and severally liable. Because you are a nominal security officer. So, if you are not in this line of work, don't worry about continuing education.