Some people create a “Games” directory, to keep games separate from other applications. You don’t have to put your programs in the Applications folder, though: they’ll run from anywhere. Then you can feel free to delete the original DMG file: you don’t need it anymore.When you’re done installing: just click the “Eject” arrow.
dmg installation file from the official link on above Like if you wanna download Microsoft Lync for Mac from this page, you’ll directly get the. Most MacOS applications downloaded from outside the App Store come inside a DMG file.
