iPhone microphone takes control of the audio during zoom meeting on Mac

[ECJ]

This has happened several times to me, but only under the following circumstances.

I am on a one-to-one call; I am not the organizer of the call.

I am using Zoom Workplace.

I connect from my Mac Mini and I am running OS Sonoma 14.4.1.

I am using an external microphone and my internal speakers.

During the call my external microphone will turn off because my iPhone 15 pro max has grabbed the setting.

I have had the iPhone ask me if I want to connect and I have always answered disconnect.

It still grabs the microphone, and when it does, I can't be heard by the organizer.

I have finally had to turn OFF my iPhone during these calls.

I'm sure it's a setting but I am not sure whether it's on the Mac Mini or my iPhone.  Also, so far, this is the only meeting where I have had this problem.

Does anyone know what the solution is?