This is the official JetBrains documentation on sbt support in IntelliJ IDEA: https://www.jetbrains.com/help/idea/sbt-support.html

It provides a detailed guide on how to set up and manage Scala projects using sbt in IntelliJ IDEA — including how to import sbt builds, configure auto-import, delegate build actions to sbt, and run or debug your Scala code directly from the IDE.