キーボードには、様々な言語向けに、様々なレイアウトがあります。ひとつの言語だけでも、英語用の Dvorak 配列など複数のレイアウトが存在することもあります。お使いのキーボードを、キーに印字されている文字や記号にかかわらず、別のレイアウトとして使用できます。この機能は、複数の言語をよく切り替える場合などに便利です。
Open the Activities overview and start typing Settings.
Click on Settings.
Click Keyboard in the sidebar to open the panel.
Click the + button in the Input Sources section, select the language which is associated with the layout, then select a layout and press Add.
If there are multiple user accounts on your system, there is a separate instance of the Region & Language panel for the login screen. Click the Login Screen button at the top right to toggle between the two instances.
Some rarely used keyboard layout variants are not available by default when you click the + button. To make also those input sources available you can open a terminal window by pressing Ctrl+Alt+T and run this command:
gsettings set org.gnome.desktop.input-sources show-all-sources true
Certain languages offer some extra configuration options. You can identify those languages because they have a icon next to them. If you want to access these extra parameters, select the language from the Input Source list and a new button will give you access to the extra settings.
When you use multiple layouts, you can choose to have all windows use the same layout or to set a different layout for each window. Using a different layout for each window is useful, for example, if you’re writing an article in another language in a word processor window. Your keyboard selection will be remembered for each window as you switch between windows. Press the Options button to select how you want to manage multiple layouts.
The top bar will display a short identifier for the current layout, such as en for the standard English layout. Click the layout indicator and select the layout you want to use from the menu. If the selected language has any extra settings, they will be shown below the list of available layouts. This gives you a quick overview of your settings. You can also open an image with the current keyboard layout for reference.
The fastest way to change to another layout is by using the Input Source Keyboard Shortcuts. These shortcuts open the Input Source chooser where you can move forward and backward. By default, you can switch to the next input source with Super+Space and to the previous one with Shift+Super+Space. You can change these shortcuts in the Keyboard settings under Keyboard Shortcuts ▸ Customize Shortcuts ▸ Typing.