why the option for adding people is grey for file sharing in iCloud drive
I have the latest MacOS Sierra installed in my iMac. I like to share the files in the folder of iCloud drive with my friend. When I clicked on the share option. It shows the options such as mail, reminders, notes, msg, sent to chat. but I can not add people. how to fix this problem? Thanks much
iMac, OS X Mountain Lion (10.8.2)