Navigate to the picture that you would like to add markers to.

Press the gear icon at the bottom right corner of the image you want to edit.

A list of options should now appear.

Select Markers.

The media manager will open to the Add Markup frame.

First choose a shape you would like to place by clicking on the corresponding shape.

Select what color you want the shape to be by clicking on it.

Once you have the correct shape and color selected, find the area that you want to put a marker around.

Using your mouse, Click and Drag the shape to the proper size.

To make more markers, repeat this step and Step 4.

When finished adding markers, press Save Changes.

Select the marker by clicking on it.

There are two ways to move markers:

Click and Drag the marker to the desired location.

Using the Arrow Keys:

To use the arrow keys to move the marker, select the marker and press the arrow key that corresponds with the direction you want the marker to move.

To make the marker move in larger increments, hold Shift while pressing the arrow keys.

Select the marker by clicking on it.

Around the edges of your shape you will see small, draggable blue circles.

Click and Drag one of these blue circles to change the shape of your marker.

If you need to resize a marker past its maximum:

With the marker selected, hold down the Command ⌘ key (mac) or your keyboard.

Press the + key (while still holding Command ⌘) until the marker reaches the desired size.

Select the marker by clicking on it.

Click the Clear Selected.