If you only want to change settings, then I would clone the theme. If you want to make changes to the code of the theme, then you would create a child theme.
Themes
Essentials Theme - Child or Clone?
Αυτή η συζήτηση κλειδώθηκε κι έτσι δεν μπορείτε να απαντήσετε σε αυτή.