Norgaard has previously been head coach for SønderjyskE and temporary head coach for Esbjerg.
Asked if the new job is a 'step back', he replied to Bold: "I don't want to say that, but I understand what you mean.
"The most important thing for me is to be in a developing environment with good people, and then it is not so decisive whether it is me who has the last word. I think I'm good in that role as an assistant.
"It gives and requires different things, and I can do both, I would say. Then there is the question of what to offer, and there is also a lot of responsibility as an assistant at Brentford.
"We have a staff of 35 people, and there is no reason to have so many employees if it was Thomas who had to manage everything. He of course listens to the experts and people around him, but in the end it is he who makes the decisions."