Seperate Programs rather than taps when multiple instances of same program are running

When I open multiple instances of emacs in nixos (with gnome desktop manager)
I found like below

I want each instance of emacs is shown in seperate way. Can I do that?

By default, Super-Tab and Alt-Tab keyboard shortcuts switch applications rather than windows in GNOME Shell.

You can change the behaviour to something that more closely matches the behaviour of other window managers:

  1. Open “Keyboard” pane in the GNOME Settings app.
  2. Click “View and Customize Shortcuts ❭”.
  3. Under “Navigation”, click “Switch Windows”.
  4. Press your preferred keyboard shortcut.
  5. Click the “Set” button.

Or, alternately, run the following commands:

dconf write "/org/gnome/desktop/wm/keybindings/switch-applications" "@as []"
dconf write "/org/gnome/desktop/wm/keybindings/switch-applications-backward" "@as []"
dconf write "/org/gnome/desktop/wm/keybindings/switch-windows" "['<Super>Tab', '<Alt>Tab']"
dconf write "/org/gnome/desktop/wm/keybindings/switch-windows-backward" "['<Shift><Super>Tab', '<Shift><Alt>Tab']"

See GSettings section of NixOS manual, if you want to configure it declaratively. (Or home-manager example.)

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