The General Extrusion () operator is almost identical to a general extrusion coupling you can add in the Model Builder. The main difference is how you specify the operator name and selections, which is described in the Operators section.

Under Advanced, select the Map between product selections checkbox to expect the source selection to be a product selection. Two additional sections, Destination Map for Extra Dimension and Source Map for Extra Dimension, then appear. They include Expression fields for the destination and source maps. These maps expect a vector or matrix input using curly braces ({) with a coordinate expression of the correct size. These inputs are the equivalent of the tables in the Model Builder version of the operator. The Source Map for Extra Dimension section is only active when the Expression field in the Source Map section is enabled.