Displaying model data
Model inputs and outputs can be automatically added to the ArcMap table of contents after model execution by using the Add To Display option.
Right-click any data variable and click Add To Display, as shown below.
Add To Display has no effect outside ModelBuilder. When running a model tool from its dialog box or the Python window, the Add To Display setting will not be honored. To add model data variables to the display when running the model from its dialog box or the Python window, make the data variable a model parameter, then enable the Add results of geoprocessing operations to the display option from the Standard toolbar: Geoprocessing > Geoprocessing Options > Add results of geoprocessing operations to the display.