Keyboard Lock Keys

[BERKANT74]

Hello,

How can individual buttons on the keypad lock.

For example: letters, numbers, or the remaining other keys.
Please help me thank.
can you give me 1-2 examples show ("Input").

[BERKANT74]

Example: when I click on INPUT1 abc and write, "Example d keylock 'd be INPUT1 whom I should not click on Reagsion show.