New Rating required for the system?

Channel 5's "Play For Today" has a rating on some of its shows as "G+", distinct from its usual "G". (Seems to be the equivalent of 18, as I have to specify I'm over 18 when I watch it.)

I've entered them as "G", but it would be nice to have that full accuracy if possible: https://www.channel5.com/show/play-for-today/season-2-7f367235-ee9d-44ac-9947-0d7216497385/02968104-1363-45d6-bd35-3703c2087498#state=5