Download the extension to your local machine as a zip file package.
From the backend of your Joomla site (administration) select Extensions >> Manager, then Click the Browse button and select the extension package on your local machine. Then click the Upload & Install button to install module.
Go to Extensions >> Plugin, find and click on AllEvents Magnet – AllEvents . Then enable it.
If you have problems installing or updating the extension, please try the manual installation process as described here: docs.joomla.org/Installing_an_extension