Please label the calendar view. Best option would be to overlay the layer name onto the specific row. And provide an option for one row per layer. As it is, the layers all get jumbled together, ...
The Calendar view in quarterly mode is gigantic, with what appears to be an inch or two of space between rows. It's such an inefficient use of space. Please create a compact mode.
|Label||User name||User email||User type||Date | Link|