Hi Tim,
In quick experimentation setting non-working time of a month (July
15 to August 15) and then changing the zoom to show months at the
lower tier -- I can't see the nonworking time shading at all. When
I increase the span of the nonworking time from July 15 to end of
August I can now see the nonworking time, but it appears to start in
August and end in August, When I further increase the nonworking
time from July 15 to Sept 15, again, I only see August.
The level of detail seems to only work in full month increments.
You may have to change your zoom magnification or take an alternate
approach of drawing a color filled rectangle in the background of
the gantt chart. Again, it's going to be tough to hit the 1/2 month
span.
Another alternative may be to set the gantt bars that fall during
that time frame to a different color. You should be able to set a
flag field to "Yes" for tasks in the specific date range and then
create a new bar style based upon the flag = yes.
Julie