This article explains what information to provide when requesting a new group in Google.
Request template
Group name + description:
Group desired email address:
Group owner + members:
Should the group receive emails externally (Yes/No):
Should the group be part of a bigger group (Yes/No):
Who can view messages internally (Group members/Entire organization):
How can users join the group (By invite/By their own):Submitting your request
Fill out the template above and send it to your IT team to create the new Google group.