Fork of https://github.com/spin83/multi-monitors-add-on rewritten (almost) from scratch for gnome-shell version 46.
# clone repo
git clone git@github.com:lazanet/multi-monitors-add-on.git
# cd into cloned repo
cd multi-monitors-add-on
# create a local shared gnome shell extensions dir
mkdir -p ~/.local/share/gnome-shell/extensions
# create a symbolic link in the extensions dir to this extension
ln -sr multi-monitors-add-on@spin83 ~/.local/share/gnome-shell/extensions
Restart the shell and then enable the extension.
Multi Monitors Add-On extension is distributed under the terms of the GNU General Public License, version 2 or later. See the LICENSE file for details.