https://www.commlabindia.com/resources/online-course/train-the-trainer.php
Being an SME in your own domain, be it Sales, ERP or Operations, you will often be asked to shoulder the responsibility of conducting classroom training to transfer your special skills and knowledge at your workplace. If training is not your cup of tea (and usually it isn’t!), and you have not had any formal training in conducting training, you might find this daunting.