How to add copyright to my website

I would like to add the following copyright info at the bottom/footer of the website.

COPYRIGHT © 2018 TERASWIFT INC., ALL RIGHTS RESERVED.

Hello there,

Modifying default footer credits is only available in the pro version of Sydney. Once it’s activated, you can simply go to Appearance > Customize > Sydney Pro: Extra Options > Footer credits.

Regards,
Kharis