The Meta setting mode is used for setting the main meta data of your whole website. The data in these section is also the default for all other created pages.
Keyword area – this is used for search engines. This keyword is the word your Viewers will type into the search engine when looking for your page.
Description area – this is the description the search engines will give when displaying the search results for the keyword your viewers are looking for.
By clicking Save icon you can save changes or Cancel them using the bottom panel of Your CMS. Save for all icon allows you to apply all sttings to every page in your website.
The better keywords and description you will make, the higher will page rang of the site in web search engines as Google.