Rename a NONMEM model file

Select the model in the list.

Right-click the selected model and choose File actions > Rename from the menu.
Or
Select the Models > Rename model menu option.
Or
Click in the toolbar.

Edit the text in the New model number field.

To maintain the connection with the model using the new name, check the boxes to rename any results and table files associated with the model and to update the model name within sections of the model file itself.