‘Meet up’ means to meet one person or a group of people (pre-arranged) to do something. This phrasal verb can come up in any part of the exam, but it is also a phrasal verb that candidates may have an opportunity to use, particularly in part one of the speaking paper or in an informal letter or email in the part 2 of the writing paper.
Before I left for New York I met (5)…UP… with all my family and friends for a farewell dinner.
Examiner: “What do you usually do on a Saturday evening?”
Candidate: “I usually meet up with friends and go out for dinner or a few drinks at a local bar…”