I'm using El Capitan and I want to change emoji shortcut which is ctrl+cmd+space. I want to change it to two buttons? Is it possible?
This will work everywhere that Emoji & Symbols has a menu item...
- System Prefs > Keyboard > Shortcuts > App Shortcuts
- Click 'All Applications'
(hidden in the picture)
- Click +
- Type Emoji & Symbols in the first box
- Type your replacement trigger in the second
- Click Add
As noted in comments, Cmd/Space is usually used for Spotlight. I chose this almost at random & discarded after the picture was taken.
As a quick add-on to Tetsujin’s great answer, you could use Karabiner Elements to remap it to a single key if you wished.
Currently I’ve reassigned Caps Lock to showing the emoji picker.