Samsung TV E-Manual page 194

Meijer.com
– 18+: Adult programming.
To block certain content, select an
entry field to lock (That is, "click it".).
For example, click the 18+ lock and you
block all TV programs rated 18+.
The rating categories are also grouped
so that clicking one category blocks
all the categories a parent would block
along with it. For example, if you block
the G category, then PG, 14+ and 18+
will automatically be blocked.