To make your pages come up as top results on Google matching to the search keywords clients type in, follow these steps:
First, click on "Manage Pages" on the top menu bar, and under there choose "Content Pages".
You will find all your current pages listed there.
To get to the SEO options, "edit" the page.
Now you have three tabs to choose from. Click on the third one called "SEO".
Here, you can type in a Meta Title, Custom URL Slug and a Meta Description.
On the right side underneath the Google logo you are shown how your website will be shown for users.