Keep a “clean” LTS version installed at all times for testing new assets or quick prototypes, and use per‑project version locks to avoid accidental upgrades.
After installing an Editor version, you can add or remove modules via Unity Hub: unity hub versions
Unity Hub treats them as separate installs. Projects can be switched between them, but downgrading patch versions can be risky. Keep a “clean” LTS version installed at all
Each Unity project is tied to a specific Unity version (stored in the ProjectSettings/ProjectVersion.txt file). To switch a project to a different installed version: unity hub versions
Used to preview upcoming features and provide feedback.