Tab : Home Page
Here you can add desired Title Tag, Meta-description and Meta-keyword. This is as same as the options under System > Settings > Edit Store. However in Opencart it doesn't support multi-language for these fields. With this extension you can setup desired Title Tag, Meta-description and Meta-keyword for all languages of your store.
Tab : Paginated Pages
By default in OpenCart, the paginated series has same title and meta-description for all pages. Becuase of this, search engines markes the pages as duplicates for the same meta content.
By setting these fields, you can create unique content for each page by specifying page numbers and also you can add some keywords to the meta content.
This fixes your most of the duplicate content issues.
Tab : Search Pages
Using this fields you can add title, meta-description and meta-keyword to your search pages
Tab : Tag Pages
Using this fields you can add title, meta-description and meta-keyword to your tag pages
Tab : Routes
Here you can add title, meta-description and meta-keyword to any routes. For example, account/login, account/register, account/voucher, information/contact, etc.. To add data, click on Add Meta button at the right top
Click on Save button at the right top after filling up all fields under tabs home page, paginated pages, search pages, tag pages