It looks like the keyboard options for move-to-workspace-left/right were hidden in Gnome 3.28 onward.
commit dc37ee27824b7c28f377286b3f9ebba1c56283d8 Author: Florian Müllner <fmuell...@gnome.org> Date: Wed Jan 24 16:52:23 2018 +0100 data: Don't expose horizontal workspace keybindings to Settings Given that GNOME has used a vertical workspace layout ever since 3.0, allowing users to assign keyboard shortcuts for horizontal workspace navigation isn't useful at all, as rightfully pointed out by Bastien Nocera. https://bugzilla.gnome.org/show_bug.cgi?id=645460 --- BUT, the internal settings still exist. You can get to them with the 'gsettings' command and: org.gnome.desktop.wm.keybindings move-to-workspace-right org.gnome.desktop.wm.keybindings move-to-workspace-left ** Bug watch added: bugzilla.gnome.org/ #645460 https://bugzilla.gnome.org/show_bug.cgi?id=645460 ** Package changed: gnome-control-center (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1901315 Title: Missing shortcuts for moving window to workspace right or left Status in mutter package in Ubuntu: Won't Fix Bug description: After upgrading to groovy, I can no longer move windows between workspaces to the right or left. Both the "Move window one workspace right" and "Move window one workspace left" commands are missing from the list. (See attached screenshot). ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: gnome-control-center 1:3.38.1-1ubuntu1 ProcVersionSignature: Ubuntu 5.8.0-25.26-lowlatency 5.8.14 Uname: Linux 5.8.0-25-lowlatency x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu50 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Oct 24 15:26:19 2020 InstallationDate: Installed on 2018-08-25 (790 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to groovy on 2020-10-24 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1901315/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp