A group folder is a folder that is created by Admin that is
shared with everyone in a group.
Such “group folder” is created and configured in the “Group folders” Administration section under Settings menu of an Admin user.
By
default, Read access is given when a folder is shared to a group. Permission can be set for Write, Share
and Delete.
The
shared folder will appear under each user’s Files App as a folder with the
group icon as shown below.
There
is an Advanced Permissions setting whereby it allows entitled users to
configure permissions inside group folders on a per file and folder basis. For more details on this, please refer to
documentation at URL https://github.com/nextcloud/groupfolders. Please read and take note that the permission
rules and you may need to set it in a certain manner to achieve the desired
effect.