To create templates for users to edit in CE.SDK, you can start the editor in different configurations. Typically, you would set up and load the Advanced UI with the role "Creator" in your backend to create templates.
An example of this can be found in our showcase here. Once you have created the template and set any necessary constraints, you can save it in our scene format in your backend and load it for your user in the role "Adopter".
For a more user-friendly editing experience, we recommend enabling an easier-to-use UI such as the Default UI, which can be found here.