To use an emoji reaction, click on the chat you want to send a message and, on the left side of the message field, click on the emoji icon. Select the emoji you want to send and press enter or click on the “Send” button.
If you are a MacOS user you can also use the emoji library from the operational system. To do that, click on the massage field and then control+command+space on your keyboard. Select the emoji you want to send and press enter or click on the “Send” button.
If you are a Windows user you can use the emoji library from the operational system. To do that, click on the message field and then winkey+. or winkey+,
Select the emoji you want to send and press enter or click on the “Send” button.