By default, any group participant can change the group subject, icon, description, or send messages. However, a group admin can change group settings to allow only admins to edit group info or send messages.
Change the group subject
Open the WhatsApp group chat, then tap the group subject.
Alternatively, tap and hold the group in the CHATS tab. Then tap More options > Group info.
Tap Edit next to the group icon and subject.
Enter a new subject, then tap OK.
The subject limit is 25 characters.
You can add emoji to your subject by tapping Emoji.
Change the group icon
Open the WhatsApp group chat, then tap the group subject.
Alternatively, tap and hold the group in the CHATS tab. Then tap More options > Group info.
Tap the group icon > Edit.
Choose to use your Gallery, Camera or Search Web to add a new image or you can Remove icon.
Change the group description
Open the WhatsApp group chat, then tap the group subject.
Alternatively, tap and hold the group in the CHATS tab. Then tap More options > Group info.