If you have edit access to a template, you can set up a default naming structure for the presentations generated from that template (e.g., (templateName) - (timeStamp) - (plainText)).
This will apply to all future presentations generated from this template.
From within the template, click on the template name, select “Set Name for generated presentations,” and set up your default naming structure. You can add naming elements, adjust the order of each element, and preview the naming structure. When you’re done, don’t forget to save!