We can add contacts to the created groups on the Huawei smartphone immediately or afterwards. A multi-selection is possible to make the function easier to use.

Android 10 | EMUI 10.0
Step 1:  Open the  Contacts app
Step 2:  Tap on  Groups
Step 3:  Choose a  group
Step 4:  Tap on  Add members
Step 5:  Select the  contacts  to add
Step 6:  Tap on  Add
  1. Open the Contacts app
  2. Tap on Groups
  3. Choose a group
  4. Tap on Add members
  5. Select the contacts to add
  6. Tap on Add

Huawei Instructions