Use the Whitelist setting to exclude selected contents from the plagiarism check. Those can be, for example, websites, idioms, phrases or legislative texts. 

Whitelist - URLs: Enter the specific URLs of websites you don’t want to include in the plagiarism check

Whitelist - URLs +: Enter the websites you want to exclude, which will also exclude other websites with the same content. 

Whitelist - Phrases: Enter phrases you want to exclude from the plagiarism check. This also applies to idioms, legislative texts or specific working.