Drag
the app on top of another app you wish to put into the same folder until a white box appears around both apps. Or drag the app into an existing folder.
Let go.
How to delete apps in Launchpad on Mac
You can certain apps on your Mac from Launchpad, which is a great way to keep your desktop clean and organized. Please note that you can't delete certain built-in apps or apps running in the background on your Mac.
Open