To add friends to a group you must be an admin or the owner of the group.
If you have either of these roles you will see an 'Add Friend' button within that group's settings.
For Web:
- Select 'Groups' from the header of your main page.
- Select the group you wish to add a friend to.
- Click on the 'Group Settings' option
- Click the 'Add Friend' option
- Search your friends list and click on the friend(s) you wish to add
- Click 'Add'
You can also add friends to a group through Messenger.
- Open your Messenger from the bottom right corner
- Click on the 'Groups' option
- Select the group you wish to add friends to
- Click on the 'Group Settings' icon
- Click the 'Add Friend' option
- Search your friends list and click on the friend(s) you wish to add
- Click 'Add'
For Mobile:
- Tap the OwnersBox icon in the bottom right corner
- Tap on the 'Groups' option
- Select the group you wish to add friends to
- Tap the OwnersBox icon in the bottom left corner again
- Tap the 'Add' option
- Search your friends list and tap on the friend(s) you wish to add
- Tap the checkmark in the top right corner to confirm the additions.