The Add to Page button does what you may guess... let's you add stuff to your page.
This button is located in the lower left corner of your screen. You can find it at position number 3 in the image below.
The different tabs of the Add to Page button
When clicked, the Add to Page button will expand to show different tabs containing professionally styled elements you can add to your page.
These tabs include Forms, Badges, Content, Text, Buttons, and Devices.
Dragging an element onto your page
Click and drag the element to where you'd like it to appear on your page. You can also click on the element to have it appear in the center of your page.