Moving current contacts to already created "views"

Moving current contacts to already created "views"

How do I move select Contacts into "Created Views".  For example we have a category for a particular area code.  How can I finish the sorting process?  And I do not want duplicates.  Goal would be to have most "Contacts" assigned to a particular group.   I'm sure there is a way to move them. :-)
 
Thanks,
 
Arleen