Customise your quick reactions
You can choose up to five of your favourite emoji to personalise your quick reactions. Here's how you do it.
1. Hover over any chat message.
2. Select More reactions 
and then select Customise default reactions 
3. Remove any of the current reactions by hovering over the emoji you want to replace, and clicking the X in the top right corner. Add any emoji from the gallery by clicking the plus sign.
Personalise your emoji
Some emoji—those that include a gray dot in the corner—can be personalized for different skin tones. Just right-click on any emoji with a gray dot to open a series of variations for that emoji, and choose the one that you want to send.
