The name, colours and logo of Sydney's newest A-League club should be settled by March next year with a series of forums planned over the coming weeks to give the community their say.

A few days after winning the battle for A-League expansion, celebrations have come to an end for Macarthur South West Sydney and the hard work of preparing the new club for their debut in season 2020-21 has begun.

Hard work starts now: Macarthur South West Sydney co-chairman Gino Marra is planning a series of community forums to help shape the new A-League club's identity. Credit:Simon Bennett

Bid co-chairman Gino Marra spent most of Monday getting phones connected at the club's temporary offices at Campbelltown Stadium before sitting down to wade through the nearly 1000 emails of support they have received since last Thursday's announcement.

"I'm actually responding back to them as many of the emails as possible. If someone takes the time out to send you a congratulations email or a suggestion, the least you can do is reply," Marra said.