How to add shooting data to scanned file in Bridge?

I've started scanning negatives wonder how to add shooting data (f-stop, shutter speed, iso, film type etc.) to the metadata using Adobe Bridge.
The Bridge metadata templates don't seem to have fields where this can be
entered. The only obvious way I can see to do it is to use keywords. Awkward.
Am I missing something?
Thank you,
Harlan

Sorry, don't know about Adobe Bridge.
I use "exiftools" from the command line.