# How can I assign a model file that is currently not assigned to a project to an existing project?

In this case, the following procedure is suitable:

• Open the Project Manager and search for the project to which you want to add the file in the project navigator on the left.
• Right-click this project and open Windows Explorer (see Figure 01).

• Drag-and-drop the desired file and then close Windows Explorer.
• The file is thus assigned to the desired project.