Record who bought the asset, which project it supports and where the finished work will appear. That small note keeps the source file connected to its license context.
Separate output from source
A license may allow a finished commercial video while still prohibiting distribution of the editable template. Deliver the finished output and only share source material when the license expressly permits it.
Ask before the edge case
Broadcast, multi-seat access, template-on-demand use and resale need explicit confirmation. Send the intended use before purchase when the standard license does not answer it.