Hello MichiganJohn,
In Method:Classic, the due date end does is not set to a prescribed time when setting an activity as a Meeting. It has to be set manually. In Method:New, the meeting is being set just ike Method:Classic. As Justin said, it will require customization to have the due date end set one hour after the start time by default. If you need any help doing the customization, please post back and we can help out.
Thanks,
Greg