How can qq send messages to everyone at once?

Qq sends messages to everyone at once, as shown below:

Mobile phone: iPhone 12

System: IOS 15. 1

Software: qq8.8.55

1. First, find "Devices" on the QQ homepage and click on my computer to enter, as shown in the following figure.

2. Then, in the opened My Computer page, enter a message to send to everyone, click Send, and then continue in this window, holding down the sent message with your finger.

3. After seeing the pop-up options, click Forward.

4. Then, in the entered interface, click the multi-choice button. Then check the people to send, select them all, and click the send button.

5. In the last pop-up interface, click Send to send the message to everyone.