To add an Integration Over Extra Dimension () node and create an operator for integration over an extra dimension, under the Extra Dimension node, right-click Definitions and from the Extra Dimensions submenu, choose Integration Over Extra Dimension.

Enter the Operator name of the integration operator.

Select the Integration order and the Frame to integrate in. If the Extra Dimension is an axisymmetric geometry, the Compute integral in revolved geometry check box is selected by default.