The phrase "special preparation" refers to getting ready for something in a unique or specific way, often needing extra effort or attention to detail. Full definition
We use our professional judgement and experience to decide when these kinds of special preparation techniques are necessary and useful and when they are not needed. (kansascitylawoffice.com)
The phone interview requires special preparations as it is the first selection procedure for many companies. (job-interview-site.com)
No Protestant group of any consequence has ever officially denied the necessity for some kind of special preparation for its ministers. (religion-online.org)