Stack Plot Window
In a stack plot window the time series of a Group are stacked on top of each other (see following figure).
Creating a Stack Plot Window
Create a new stack plot window by right clicking on an empty space in the Plot Manager window. The context menu opens. Use it to 
Create a new stack-plot-window (see following figure).
In the Plot Manager, the new stack plot window is created with the subfolder Group.
Drag and drop the desired time series from the Project Explorer or a Data Grid (value table) onto the corresponding Group in the Plot Manager or directly onto the Plot Window (see following figure).
The order of the time series in the Plot Manager determines the order in which they are stacked: the first time series is at the bottom, the other time series are stacked on top.
Group
Using the context menu of the plot window in the Plot Manager, you can 
Add more groups to the plot window (see the following figure).
Use drag and drop to assign time series to the groups.
Using the context menu of a group in the Plot Manager, you can Delete, 
Rename, or negatively stack the group (see following figure).
Groups overlap each other in the plot. For example, two groups can completely overlap if they represent the same time periods and the same net energy quantities. For example, in order to separate supply and demand, one of the groups can be represented negatively (as in the figure above).
The following slider shows the two groups Supply and Demand superimposed in the first figure and Demand negatively stacked in the second figure.
In a group, for example, heat generators such as cogeneration units and boilers, can be stacked in such a way that base load and peak load suppliers can be identified in the plot. In the following figure the heat demand to be covered is shown in negative, the CHP is the base load supplier and the boiler covers the peak loads.
If several stack plot windows are opened at the same time, they are arranged one after the other by default, as shown in the figure above.
