Changing Host Key for already scheduled recurring meeting

I am able to change the Host Key for my Personal Meeting, but not for an already scheduled recurring meeting.

(See screen shots for what settings I am going to.)

I go to "Meetings," "Upcoming," where I see my recurring meeting.  When I click on "edit," there is no setting for changing Host Key.

Any help would be greatly appreciated as I am having an issue with someone who has the host code to this meeting.