1. Open "Viber." Tap the shortcut icon on your phone’s application screen to open the application.
2. Go to the chat list. Do this by tapping the chat button (talk bubble icon) on the upper-left corner of the screen.
3. Tap the "Group Conversation" button. This should be on the chat list section, located on the bottom part of the screen (the second button from the right, beside the "Menu" button).
4. Select the people you want to include in the group chat. Tap the names of the person you want to include on your "Contact List" to select.
5. Tap on “Done.” This should be on the upper-left corner of the screen to proceed. A new chat window will open.
6. Start the chat. Type in your message and tap the paper plane icon on the right side to send it. Wait for the other members of the group chat to respond.
7. Add participants. Tap the "Options" button by tapping on the gear icon on the upper-right corner of the chat window, and the options will slide out from the right.
Next, tap on “Add Contacts.” Just scroll down to the “Participants” section and repeat steps 4 and 5 to add the participant you want.
Link Source : WikiHow
