Using Voice Isolation When Recording In The Voice Memos App

I saw a post on Facebook that said we could use voice isolation when recording in the Voice Memos app. I can't get this to work. I'm wondering if anyone has had any luck with this? I'm using an iPhone 16 Pro Max, and I'm running iOS 26.2. The following are the steps that I've been using to attempt to get this to work.

1. Start a recording in the Voice Memos app.

2. Enter the Control Center and double-tap on Services in Use.

3. Choose the Voice Isolation option.

For some reason, when I choose Voice Isolation, it won't actually select the option. Like I said earlier, I'm just wondering if anyone has gotten this to work. Any assistance would be appreciated.