In Simulink® Project, when you create a template, it contains the structure and all the contents of the current project, enabling you to reuse scripts and other files for your standard project setup.
Before creating the template, create a copy of the project, and edit the copy to contain only the files you want to reuse. Use the copy as the basis for the template.
Note: If the project is under version control, see instead Create a Template from a Project Under Version Control.
On the Simulink Project tab, in the File section, select Share > Template.
On the Create Template dialog box, edit the name, add a description to help template users, then click Save As. Choose a file location and click Save.