Walk activity without Vo2Max?

When I do Walk activity with normal pace (recovery - zone 2), my Vo2Max decreased significantly as I took more than 15 minutes to walk 1 mile. I have looked into Walk settings but I couldn't find an option to disable Vo2Max. I do see an option for other Run type activities though.

I am trying to do small walks under in zone 2 without recording Vo2Max. Is there anyway to achieve this with Fenix 6 Pro or Forerunner 945 LTE?

Thanks!