Float a blank container on the dashboard directly over the location where that month pill will be.
User can click all day on it and nothing will happen.
Here's one approach:
- Create calculated fields for YEAR([Date]) and MONTH([Date]).
- Create your own hierarchy with these 2 fields.
- Drop your calculated Year field onto the Columns shelf in place of your [Date] field.
- Now the only drill-down hierarchy that will be available is the one you created (Year and Month only).
Ooh, Jamieson -- I should have thought about that one before hacking in the blank container!