Here are Apple's instructions for changing shortcuts found in PH21531:
Choose Apple menu > System Preferences, click Keyboard, then click Shortcuts.
Select the action (Input Sources in your case) in the list that you want to change.
Double-click the current shortcut, then press the new key combination you want to use.
You cannot use each type of key (for example, a letter key) more than once in a key combination.
- Quit and restart any apps you’re using for the new keyboard shortcut to take effect.
Here are Apple's instructions for changing shortcuts found in PH21531:
Choose Apple menu > System Preferences, click Keyboard, then click Shortcuts.
Select the action (Input Sources in your case) in the list that you want to change.
Double-click the current shortcut, then press the new key combination you want to use.
You cannot use each type of key (for example, a letter key) more than once in a key combination.
- Quit and restart any apps you’re using for the new keyboard shortcut to take effect.
In Mojave, you can simply toggle the checkbox to enable switching between two input sources using the Capslock button. (Haven't tried this with more than 2 input sources though).
Choose Apple menu > System Preferences, click Keyboard, then click Input Sources.
Keyboard shortcut to CHANGE LANGUAGE TYPED | MacRumors Forums
Where is the change language key for mac in windows keyboard
Keyboard language switching - Apple Community
How to switch keyboard input language for Mac mini
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Which key should I press to change the language of my input when using a windows keyboard. In Mac keyboard I press the globe symbol key. In windows keyboard is there any equivalent key for it
On a Mac I use Command + Shift + Z to switch languages. I was already used to Alt + Shift from Windows and, since Command + Shift alone wasn't a valid combo, I just added the nearest key (Z).
Since I use GNOME-DO on Linux, and used to use Google Desktop Search on Windows, I changed the spotlight shortcut to Ctrl + Space, and use Apple + Space for language switching.
By default in OS X, spinning through keyboard layouts is defined as ctrl + space. This mapping is turned off in favor of the trigger for Spotlight.
To modify this default mapping, you need to go to System Preferences → Hardware → Keyboard & Mouse → Keyboard Shortcuts. There you will find a list item for Input Menu. Select the checkbox and it will become enabled. From there, double-click on the predefined shortcut on the right side of the list. Once the existing shortcut is selected and editable, you can type your preferred shortcut sequence.
Unfortunately, alt + shift by themselves are not allowed as a shortcut. You need to have a non-control key in the mix. The closest you can come is to use alt + z (using 'z', which is next to shift on the left side of the keyboard). You also have the option of setting the shortcut for the reverse order of the spin. alt + shift + z is a natural option for this.
Use Karabiner (originally KeyRemap4MacBook). Search for option shift pc. Ticking the first checkbox should let you remap to the PC behavior.
