The phrase "get together" is an informal and colloquial way to describe people meeting or gathering. If you are looking for a more formal and technical alternative, you might consider the phrase "assemble" or "convene." These words convey the concept of people coming together in a more professional or formal setting. To find such alternatives, you can use a thesaurus tool or consult a dictionary, which often provide synonyms and antonyms for various words and phrases.