Available with Geostatistical Analyst license.
ArcMap provides a suite of tools to manage layers. Although these tools do not aid in exploration or analysis, they order your map session. Some of the most relevant tools to Geostatistical Analyst are saving, renaming, copying, and removing geostatistical layers.
You add a geostatistical layer in the same way as you add other data to ArcMap. For example, you can add your data via the Add Data 
dialog box or drag and drop it from the Catalog window.
You may want to rename a geostatistical layer because, by default, a geostatistical layer is named according to the method used to create it, followed by a number (for example, Ordinary Kriging_2). This can be confusing when you're creating several surfaces using the same method but with different parameters, or when you're using the same method on different datasets.
Copying a geostatistical layer is particularly useful when you want to create another output surface type with the same model parameters.
Removing a geostatistical layer is useful when you want to delete layers that were used when exploring parameters.
When the link between the layer and the data used to create it has been broken, the link can be repaired, or, if that fails, information on the method and parameter values can be recovered to create a new version of the layer.