Input Sources preferences
Use the Input Sources pane of Keyboard System Preferences to add input sources that allow you to type in other languages, and set options for specific sources. When you use an input source, you can type in any language that uses the same script or alphabet.
To open this pane, choose Apple menu > System Preferences, click Keyboard, then click Input Sources.
Input sources list
The input sources that have been enabled for use.
Add , Remove
Add or remove an input source from the list.
Input source preferences
If the selected input source provides preferences, they appear in the area on the right. For example, if a Hebrew input source is selected, options for bidirectional text are shown.
Show Input menu in menu bar
The Input menu appears in the right side of the menu bar. It contains enabled input sources, and offers a fast way to switch between them.
This option is automatically selected when you add input sources.
Use Caps Lock to switch to and from [last used Latin input source]
Select to be able to quickly switch between a non-Latin input source (such as Chinese or Korean) and a Latin input source (such as French or English).
This option appears only when you add a non-Latin input source.
When enabled, press and hold the Caps Lock key until the green light comes on to activate continuous uppercase typing; repeat to turn it off.
Automatically switch to a document’s input source
Choose an input source for a document and have it used every time you work in the document until you close it, even if you switch to other documents that use other input sources in the meantime.
This option appears only when you add a second input source.
Chinese, Korean, and Japanese input sources include numerous options. If you added one of these input sources, switch to it (using the Input menu in the menu bar), then open its help to learn about the options.