The next step is to set some properties of the flow model. The top two layers are convertible; the horizontal hydraulic conductivity is 250 ft/day; and the vertical hydraulic conductivity is 125 ft/day. The initial head is 50 ft. The hydraulic conductivities, and initial head can be specified in the "Data|Edit Data Sets" dialog box. To set the top two layers as convertible, either use a formula that will set the Cell_Type data set to 1 in the top two layers and to 0 in the other layers or use an object that encloses the top two layers to set the Cell_Type data set to 1.
