I have a txt file of a list of systems that I want to be in an SCCM collection. I'd like to select that collection in SCCM and Right-Click->Right Click Tools-> Collection Tools -> add list of systems to collection.
T Hat would put up a file browser where the file is selected. Right-Click-Tools would read the file and add the systems to the collection.
The file would be a list of netbios names, one name per line.