Admittedly, I\'m a newbie on the Apple / Mac ecosystem...
On Max OS X, the default install from Qt Disk Image installs to the user\'s home directory (/Users/whoami
whoami
for example ,if you install Qt5.7 in the default folder,that is under /Users/your user /, you can use this command
ln -s ~/Qt5.7.0/Qt\ Creator.app/ /Applications/
now you look at your launcher panel,and you will find it.