Apparently, I cannot find a way to make modifications to the calendar views layouts. Any information will be welcome. I wanted to add the filter (resource) list to the top header area to make clicking/filtering resources easier. It's not that I don't like clicking on the the links to get me there the way it is, but I'd like to make it easier for my staff and it's how they're used to doing it now (SeedCodeCalendarPro version 4.2).

Aside from the edits available in settings, adding things like a filter button are probably best done by making the webviewer smaller and adding native FileMaker elements either above or to the side of the calendar's webviewer. That's the technique used to make this cool mod, for example, showing resource categories to the left of the calendar:

https://www.youtube.com/watch?v=AmUrKedqOLo

Here is another example of the same technique: http://www.seedcode.com/custom-sidebar-for-dayback/

Thanks John, that will work.