How to get the Gnome Activities overview to only open when clicked on [duplicate]

Solution 1:

Using the Activities Configuration. You can disable the hot corner and there are plenty of other settings.

Open the URL via Firefox browser to install the extension directly.

After that, open the Tweak Tool for the configuration

Solution 2:

If you want modify aspects of Gnome Shell, you can use extensions from https://extensions.gnome.org/

In this case (with shell versions 3.8 to 3.18 currently), you can use No Topleft Corner extension (you can install by going the page and clicking 'Install', you will need the Gnome Shell Integration plugin installed and enabled in the browser). This functionality is also available in some other extensions.