The user can add contacts in the groups to be used from the address book when sending SMS. He must to select the country in which he wants to add the contact number.
Then he may add the group that he has already added in address book by selecting from the drop-down menu.
If the user has not yet added any group he may do so clicking on the green + button and adding the group name in the next window.
Afterwards he must fill the required name, mobile number and email in the given fields.
The user click Apply to save changes or click Reset to start over.