Website tags help in improving the search results on your website and it plays a big role in the way the search results are sorted.
Note: There is a Tags Widget on the Sidebar, You can edit the visibility of this widget in the Themes > Sidebar.
To add or remove tags to your website, from the left menu, go to Online site > Preferences. Alternatively, you can type "tags" in the search bar on the top of the page and click on Preferences.
You will be directed to the Preferences page, select the General tab from the top panel.
Go to the Website Tags section, and add or remove tags.
After finishing all your changes, click the Save button on the top right of the page.