2 or more layers on a Gantt Chart(Excel 2002)
 

Hi!
I have a minor problem getting 2 layers working on a gantt
chart(modified stacked bar). The idea is to get certain points on the
Gantt Chart showing up as dots,stars,whatever. Generally points of
interest. Anyone got an idea how to get it to work. Gantt chart is
basically name-time axis based with long periods of time(following of
our time charter fleet)
In addition, does anyone know how to make links or chooseboxes to react
to a certain element of the chart(say 4 different parts of the same
bar[different periods of contract etc], without too much hassle?
Thank you in advance!