I am recording daily turnover data. Occasionally alongside this I also
register some explanations for extraordinary events eg "new dealership opened
today"

The turnover data is then presented on a line chart using the "dynamic area"
technique (thanks for your help with that!).

Now I would like to show the verbal explanations in the graph too - I was
thinking of possibly adding another data series as bar-chart (bar hight being
constant at "max turnover + something" and then somehow get the explanations
displayed in those bars as labels - but so far unsuccessfully.

Any idea how to achieve this?