1) Go to Multiplayer -> (server) -> Edit:
2) You can then cycle the Server Resource Packs: button between 3 states:
Enabled = Automatically downloads OnionPack without asking.
Prompt = Asks if you'd like to use the OnionPack on first-join.
Disabled = You must manually download & install the OnionPack.
(C) Kunge 2021-2022. Last updated Apr.11.2022.