Make it easier to group metrics by week in Workspace

[#1]

In Ad Hoc Analysis, it much easier and intuitive to group metrics by week.  In Workspace, you need to add your week granularity first before adding your metrics and if you want to change your granularity you need to start over from scratch.  In Ad Hoc Analysis, you can add your metrics first and then add your granularity on top of that.  The granularity (and everything else) is much easier to change in Ad Hoc.  It would be nice to mirror this functionality in Workspace, especially since Workspace will be replacing Ad Hoc Analysis.  Some consistency between UIs would make the transition easier.  Thanks for considering.