How to use sticky modifier keys

You can enable the sticky modifier keys from Karabiner-Elements Settings > Simple modifications.


Sticky modifier key indicator

Sticky modifier key indicator will be shown while the sticky modifiers are active.


You can hide the indicator from Karabiner-Elements Settings > UI.


Sticky modifiers and mouse events

The sticky modifiers are not deactivate by mouse buttons if you are not enabled the mouse.

There are two solutions: