How to keep more than one window open
I want to drag a photo into the body of an email, but cannot figure out how to keep the mail window open when I open the Finder window. I am sure there must be an easy way to do this but, no luck so far. Thanks in advance for any help.
Everett
Mac Mini (Late 2014)
10.11.6 el Capitan
MacMail
Finder
Mac mini (Late 2014), OS X El Capitan (10.11.6)