Since March, Dave Williams has been a volunteer at the Lake Macquarie International Children's Games office.

A dedicated sportsman, he wanted to use his sports passion and skills to help run this International Olympic endorsed event.

"You don't get paid in cash but the satisfaction of being part of a successful event is enormous," he said.

Mr Williams volunteered at the Special Olympics 2013 Asia Pacific Games, where he assisted in planning and executing football and cricket competitions at No 1 and No 2 sportsgrounds.

With part-time work at Triathlon NSW, managing more than 70 technical officials (referees), he was able to volunteer his skill and expertise to the Children's Games.

It is the first time the world's largest multi-sport youth games will be held in Australia.

The Children's Games will be hosted by Lake Macquarie from December 6 to 11.

As part of the organising team, Mr Williams's task is to prepare the scope for volunteers, including their roles and responsibilities, and developing training programs.

Working two days a week, Mr Williams has visited the Games' eight venues to liaise with their owners and analyse the volunteer requirements needed.

His role will ramp up as volunteer registrations come in, and the process of volunteer selection gets under way.

The Children's Games need about 900 volunteers. There are already 300 registered.