How to set Keyboard list and default on Samsung Galaxy smartphone

Keyboard list and default
Change your default keyboard, modify built-in keyboards, and change keyboard
settings.
◌ From Settings, tap General management > Keyboard list and default for the
following options:

• Default keyboard: Choose a default keyboard for your device’s menus and
  keyboards.
• Samsung keyboard: Modify settings for the Samsung keyboard.
• Google voice typing: Modify settings for Google Voice input.
• Keyboard button on navigation bar: Enable a button on the Navigation bar to
  quickly switch between keyboards.

Physical keyboards
Customize options when you have a physical keyboard connected to your device
(sold separately).

1. From Settings, tap General management.
2. Tap Physical keyboard, and then choose an option:

• Show on-screen keyboard: Show the on-screen keyboard while a physical
  keyboard is also being used.
• Keyboard shortcuts: Show explanations of the keyboard shortcuts on the
  screen.
• Change language shortcut: Enable or disable language key shortcuts for your
  physical keyboard
• Customize keys: Configure the Caps lock, Control, Command, and Alt keys.