Hi Irene, based on the Open Source license, you are licensed to facilitate or train even without being trained or certified yourself.
Technically, there is no official training curriculum or certification process. So if you wanted to create your own one, that would be completely OK as long as you respect LEGO’S Branding and trademark guidelines, which I believe you can still find on this site. The question to ask yourself is whether it makes sense for you to develop your own training programme and material. If your core business today is training, this may make sense. If your core business is workshop facilitation, you might want to consider bringing in an experienced LSP trainer who already has spent months developing the content and years refining it. If you are a management consultant, offering training may water down your credibility in your core business.
I hope this gives you some food for thought.
All the best,
Eli