Run Skype and right click on Home screen then click add contact.
Alternatively, Run Skype >> WinKey + C >> Search
Type your contacts name in the search bar.
Select the contact then Click add to contacts.
You may Refer:
This is retarded because you cannot be on the call when you do it. You have to create the conference then call the group but you cannot do it if you are talking to someone. How is this an approvement?