Any idea how to change default to /Calendar ?
Is this /Contacts folder a calendar?
Usually when you create an event in eM Client, it will be saved to the calendar you are in. That is the one that is highlighted in the tree on the left. If you are not in the calendar view, the event will be saved to the default account calendar.
But either way, you can always select the destination calendar before saving by clicking on the location, and choosing from the options.