When setting the acitivty type - Meeting - the end date should automaticall fill to the date of the event. For example, set a lunch for Monday, December 15. The end time/date should of auto filled to Decembetr 15, 2014 with an automatic one hour event timing.
I'm not sure if this is an intended feature for Method:New or not, but you could most definitely customize your account to automatically fill this in for you. If that's something you're interested in doing, let me know should you run into any issues.
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.