Add or remove emoji reactions in Chat (App)
This article explains how to add emoji reactions in Chat in App.
Add an emoji reaction in Chat
Steps
Navigate to the message you want to react to.
Hover over the message.
This opens the Message Actions  menu.
Click the Add reaction button (smiling emoji with a plus sign).
4. Choose any emoji to react with.
5. Notice the emoji populates on the message as a reaction.
Note: If a message already has an emoji reaction, the Add reaction icon will appear to the right of the emoji reaction(s). You can also click on a displayed reaction to the message to react in the same way.
Remove an emoji reaction in Chat
Steps
Navigate to the message you want to remove a reaction from.
Hover over the reaction you want to remove.
Note: Your emoji reaction is surrounded by a blue border.
Click on your emoji reaction that you added to remove it.