Yes. You can create a stationery file from any script whose format you want to use as a new default template.
When you want to open a new document in this format, go to File > Open and select that stationery file. This will open an untitled document in this format. Any changes you make will not affect the original file.
NOTE: Live support for Final Draft 7 has been discontinued. You will still be able to install, activate and use AV on appropriate computers but email, chat and telephone support is no longer available. Live activation assistance will be available via phone (818-789-6281) and email and chat (links on the left side of this page) until June 14, 2017.