Tap the Shapes icon (pictured below) from the fifth icon on the toolbar, to see all available shapes.
Change the Currently Displayed Shapes Library
Tap the Menu icon to see the available Shape Libraries
Tap a library
Tap the Arrow icon to access
Adding Additional Libraries
When you are in the shape library menu, you can add additional libraries to your account by hitting the "Get More Shapes" button. From there you can press "Add" to add the library to your account.
These additional shape libraries have more in-depth shapes for a number of different industries. Feel free to add as many shape libraries to your account as you'd like.
Adding Shapes to the Canvas
Tapping on any Shape in the Shape Panel will place it in the center of the canvas.
Add a new Labeled Shape
Tap to add shape and the Shape Label dialog will appear
Type in any text
Edit an existing Labeled Shape
Select a Shape that has been added to the canvas
Tap Shape Labels icon on lower left corner of canvas
Searching For Shapes
At the top of the Shapes Panel is a Search Bar. Typing in a search term will automatically reduce the display of shapes to include just the shapes that match the searched term.