Here is a short post about something I just found and never used until now. You can create restrictions in Analysis Office by either using the context menu of a measure or via the ribbon menu entry under Calculations >> Add Restrictions. It will display a new dialog where you can define your restrictions.
You have to define a name, a based on measure and your selection(s). After you defined your parameters, click OK and a new column will be added to your crosstab.
As you can see the restriction just show I have defined on my selection in the dialog above. I hope this could help someone.
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