The latest test version of Microsoft Authenticator is currently 6.0.0, which requires TestFlight to be used. If the application succeeds in landing on Apple Watch, the following steps will be taken in the future.
Ensure that mobile phones and Watch are connected.
Open Microsoft Authenticator at watch end
Under the account column, click the settings button. If you do not have a button next to your account, you can skip this step. In this way, users can receive landing notices in Apple Watch, and then pass or prohibit them according to actual needs.