Join before host

In my Zoom profile, I have the allow participants to join before host engaged.  I want to limit this to joining only 10 minutes before host.  I select this option.  When I am scheduling the meeting from Outlook, and I say allow participants to join 10 minutes before start time, no one can join the meeting.  It says they are waiting on the host.  What is the difference?  And how do I get this to work the way I need it to which is to allow participants to join regardless of whether the host is on or not?  It is unfortunate, but people just don't pay attention and end up joining the wrong meeting days or hours in advance which is a huge problem since you can only have 1 zoom meeting going.