In LiveWhale 2.x and before this was called PUBLIC_GROUPS. That name is still supported in 3.0 for backwards compatibility, but the new name is SUBMISSION_GROUPS.
Set an optional array of group IDs if the submissions widget is configured to allow submissions to groups other than Submitted Content, and you wish to restrict those groups to a specific set
Accepted values: array
Context: Front-end (client/public.config.php)
In LiveWhale 2.x and before this was called PUBLIC_GROUPS. That name is still supported in 3.0 for backwards compatibility, but the new name is SUBMISSION_GROUPS.