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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901315 Title: Missing shortcuts for moving window to workspace right or left To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1901315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs