You must be a group admin to add or remove participants from an existing group. A group can have 256 participants.

To add participants:

1. Open the WhatsApp group chat, then press Options > Add participants.
   • Alternatively, select the group in your chats list. Then press Options > Group info > Add participants.
2. Search for or select contacts to add to the group.
3. Press Done.

To remove a participant:

1. Open the WhatsApp group chat, then press Options > Group info.
   • Alternatively, select the group in your chats list. Then press Options > Group info.
2. Select the participant you want to remove.
3. Press Options > Remove from group > REMOVE.