Go to the ‘Content’ tab and then select ‘Pages.’ Select the ‘Page Information’ for the page you want to edit.
Edit the description to enter the text you want to display. You can use the ‘Markdown’ icon in this field to improve the styling of your page.
Advanced users can refer to online Markdown help to enhance the way the page looks. E.g. http://daringfireball.net/projects/markdown/basics.
Select ‘Save’. It may take up to five minutes for the changes to show on your site and you’ll need to refresh the page to see the latest changes.