the duplicated fields or groups can help much in the development
for example, we have a Write Panel called event, in this Write Panel
we have a field date that can be duplicated
when we created post with this write panel we have the possibility of
duplicating the field dates in case we want that the event has many
dates.
in the post 1 we can have 3 dates
in the post 2 we can have 1 date
in the post 3 we can have 5 dates
With this we do that a duplicated field could be n times in 1 post,
and we can add or remove duplicated fields
the duplicated groups work of of similar way.
for example we can have write panel called team, within this Write
Panel we created a called group member, in this group we can put its
field for the name, a field with its photo, a field with its
description, etc, etc.
when we created post, we can duplicate the group to add a member of
the equipment, the group will be duplicated with all the fields of the
group, and we can add or remove a duplicated group