With OrgChart you can create many kinds of calculations for your chart. Calculations may be used for purposes of analysis for organizational planning and budgeting.
Calculation: Chart data set
Go to the data tab and select chart data set. Then select new:
Calculation: Formula
Give a name to your new calculation field. Then under Type select Calculation of Formula from the dropdown list.
Calculation: Scope
Choose your operation to best fit your calculation as well as the scope that you would like to apply it to.
Calculation: Condition
You are able to choose a condition to use as well if you would like to apply one to your calculation. Click OK.
From there you can decide if you would like to apply this to the chart as well as show a field title. If it is yes, go ahead and check the box and click ok.