Japanese to English Other Food & Drink Restaurant Service

This term appears in an Restaurant Employee Evaluation Sheet. There is a "definition of terms" section in the document defining バッシング as 「下げ物」 but neither that helped me understand the meaning of the word. The following are some sentences containing the term in question:

1. 素早く静かにバッシングすることが出来る。
2. バッシングを丁寧に行っている。
3. 常にバッシングできるものがないか、気を配っている。

Any help would be much appreciated. :)