Access: Webstore > Layout Manager 

From the left hand side panel you can see page content tab as image below

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Drag the page content tab into the position you wish to display, you can put it at either content top,left,right or bottom.

In this example, i will drag it to position top, after dragging it to position top, click on the pen button to change the content inside.

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You can key in the title and the description you want.

Please note that you can add not only one, but multiple page content into the position you want.