1. Open the template file.
2. Click Save a Copy from the overflow menu and click Identical Copy from the sub-menu to create a copy of the file.
Follow the prompted flow and you can give the file a new name.
3. The newly saved copy will automatically be opened and selected in a new tab. You can edit this copy as you wish.
4. When done with the copy, close it and go back to the template file.
Repeat Step 1-3 to create another copy.