The request is to enable folder recursive subfolder geotagging.
Refer to discussion : Geolocation of all files in a folder
https://exiftool.org/forum/index.php?topic=16053.0
No, you can mix as many directories and individual files on the command line as you want, limited only top the max length of the command line (a bit over 8,000 characters on Windows, something like 100k characters on Linux/Mac).
For example
exiftool -ISO C:\pictures\Wedding D:\MorePictures\SingleFile.jpg E:\Another\Picture\Directory\
Add the -r (-recurse) option to recurse into subdirectories.