Norris is one of several highly-rated young prospects on the grid but for the first time in his career, he is the elder statesman in the team's line-up.
He debuted for McLaren in 2019 alongside Carlos Sainz and spent two years with the Spnaird before he departed for Ferrari.
Experienced Australian Daniel Ricciardo was then drafted in to replace him but Norris was the star man for two years, finishing above Ricciardo in the championship in both their years together.
As a result, Ricciardo was replaced by compatriot Oscar Piastri with the 22-year-old making his debut in the sport.
Brown says Norris is getting used to being the lead driver in terms of experience but believes he is happy there.
“It’s the first time, he said, he’s ever been the oldest guy in the racing team, and I think it’s a great blend of youth and experience,” he said.