The Template page of the Edit Preferences dialog box of the project editor tab allows you to set preferences for your use of template files.
When you create a new geometry project (File - New Geometry) you may chose to create a blank project, use a single template or open a folder of templates from which you may chose a template file.
Use blank project: Selecting this radio button opens a default blank project when you create a new geometry project.
Always Use This Template: Selecting this radio button uses the template file specified below as the basis for all new geometry files. You should enter the template file name or use the browse button to select the desired template.
Select from this template folder: Selecting this radio button opens a browse window for the folder specified below from which you may select which template file you wish to use for the basis of your new geometry project. You should enter the file name or use the browse button to select the folder.