Using normal HTML syntax everyone can include an image file in Joomla CMS. But many webmasters face difficulty when they have to add an image map in Joomla. You can add links to multiple parts of the image as opposed to a single link for one image file.
This Joomla tutorial covers the steps on how you can add image map in the Joomla content management system.
Save it and now you can successfully add a map code.