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To create spatial modifiers, the spatial modifier mode must be activated. To do so, first select the grid plot containing the time series you wish to modify, and then activate spatial modifier mode through the 
button. This button will only be visible if at least one spatial modifier is configured in the modifier types (See Configuration Guide > 04 Regional Configuration > 25 ModifierTypes). The button will only be enabled if the currently selected grid plot contains exactly one time series, for which a spatial modifier type is configured. Thus, this button is only available if it is actually possible to modify the currently visible time series.
To indicate which grid plot is currently being modified, i.e., the grid plot which was selected when modifier mode was activated, a wrench icon will appear in the tree and the tool-tip of the modifier mode button will show the name of the grid plot.
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