Misunderstanding step in the transactional messaging documentation

Hello everyone,

For the next couple weeks, I have troubles to setup my transactional messaging in that particular section of the documentation.

I don't understand how I can access to the <batchEvent> properties, they said to go to the event type properties but have no clue on how to access it and same for the delivery in that example. I'm asking that because I have an "event not covered" error when I try to link the event type with the template I publish previously.

if you can show me how to access that properly, it will be great.

Regards and thanks in advance,

Thibault