OnePlus
Add Members to a Contacts Group auf OnePlus
Groups (also called labels) in the OnePlus Contacts app only organize people you actively assign to them. Creating a label does not pull in any contacts automatically, which is why a freshly made group often looks empty.
To add members, open the Contacts app and tap Open the menu. From there, choose the label or group you want to fill and tap Add contacts.
Tap and hold the first contact you want to add. This switches the list into selection mode, so you can then tap any additional contacts you also want in the group without losing your first selection.
Once everyone you want is selected, tap Save to confirm the changes. The group now shows all selected contacts, and you can repeat the same steps later to add more people at any time.
If a contact is missing from the list entirely, check that it is saved on the device or the correct account first, since the group tool only shows contacts already stored in the app.