You are hosting this practice meeting. Nothing is real and nobody can hear you; explore the host controls, then try recording the meeting the right way.
We announce recording and seek consent because NT law restricts recording and sharing private conversations without the agreement of everyone involved, and because the recording is personal information the council must handle openly under the NT Information Act 2002. It is not because a voice recording counts as biometric data; under privacy law that term only covers systems that identify people automatically from their voice or face. Asking first is both a legal safeguard and basic respect.
Treat any conversation the participants would expect to stay in the room, especially performance, disciplinary or grievance discussions, as private. Never record, and never let a device or bot keep recording, a conversation you are not personally taking part in unless everyone has agreed. Even when the law lets a participant record, sharing that recording without everyone's consent can be an offence, and the Fair Work Commission treats secret workplace recordings as serious misconduct. Council practice removes the guesswork: flag recording in the invite, announce it at the start, and only press Record once everyone knows. If anyone objects in a sensitive meeting, take notes instead.
One more trap worth knowing: if anyone joins from an all-party-consent state (NSW, SA, WA, Tas, ACT), the stricter rule can apply. All-party consent is the only safe default for online meetings.