If you'd like to have some bread, please order it additionally.
For anyone that wants some bread, please order it additionally.
パンが必要な方は追加で注文お願いします。
パン some bread
パンが必要な方、
for anyone that wants some bread
If you'd like to have some bread,
別途注文 order it additionally
If you'd like to have some bread, please order it additionally.
For anyone that wants some bread, please order it additionally.
For anyone who would like bread, please make an order for it
Bread is sold separately. For any customers who would like bread, please make an order for it.
メニュー表記で、パンがついておらず欲しい人は追加で別途注文して欲しいことを伝えるとしたら、
For anyone who would like bread, please make an order for itで表現します。
例えば最初に、
Bread is sold separately (パンがついておりません・パンが別途で提供されています)をつけるとさらにわかりやすくなります。
下記のような表記がいいと思いますね。
Bread is sold separately. For any customers who would like bread, please make an order for it.
ご参考になれば幸いです！
日本 
アメリカ合衆国 
