Way to ADD EXIF info to a file?

I’d like to be able to add EXIF info to files that have no info at all, such as Photoshop files and such. Is it even possible to add EXIF to a Photoshop EPS? I’d like to do this with Image Events or some system level process, NOT photoshop and not some other program I need to download.
TIA, Chris

What version of image events?

Have you tried make new metadata tag at beginning with properties…?