Click on "Add Step"
Select "Inline Step"
You are in Capture mode now, this mode enables you to select an element on this page
Select an Element
Click on "Step Description"
Click inside 'Step Description' box
Click on image icon
A popup window will open.
Now you need to select an image, that you want to add in your step
After selecting an image, click Open
Image has been successfully added in your step