Within Cunis' job on tour he will set about educating the New Zealand A players, some of whom are touted as likely to be a part of the Black Caps' World Cup team next year.
"It's about different roles for different scenarios, but they need to think on their feet.
"With batting, bowling and coaching, if you can separate emotion of a confrontation then it's much easier to realise or calculate what your next step is.
"In cricket there's always going to be confrontation between batter and bowler and if a bowler can step away from it and see what will work best for them and the team [that's the way forward]."
The Northland Cricket Association's operations manager said he knew touring with New Zealand A would be a great opportunity to develop his coaching skills.
His father, Bob, coached the Black Caps between 1987 and 1990, something Cunis says he doesn't aspire to yet.
Cunis said he was extremely thankful for the efforts of the Northland Cricket Association and the board in standing by him, allowing him to take up such opportunities with the expectation he would bring the knowledge back to Northlanders.
Northland Cricket general manager Warren Marr said Cunis' selection in the role was an indication of the region's coaching strength.
"We're extremely proud of him, as an association," Marr said. "I've been here for a year ... we have the best coaching as a district association and this is just testament to what Steve has done.
"I think there's two points for [Northland Cricket], we can see the development that our young - and even adult - cricketers are making.
"And what he's going to bring back from working with the top cricketers will be gold for us and we'll expect him to come back and implement it."