Go to http://enterpriseteam.businesscatalyst.com/ and download your copy for Mac OS
Click on "Download MAC APP"
Once you click on "Download" it will start downloading "Enterprise_Tools_Hub.dmg" file automatically. When you open .dmg file there will be pop up for unidentified developer , click OK
Right click to the .app file and click open , and click
Move you .app file to "Application" folder.