Create images that behave as a hyperlink as follows: Select the image you want to turn into a link and click the button "insert/edit link".
A popup window will appear. This popup window enables you to enter properties. First of all, the url of the hyperlink has to be filled out.
The target option determines whether the link will be opened in the same window or a new one.
Click "Insert" after all options are filled out. The popup will close and your image has become a hyperlink.
Select the image-link you want to edit, and click on the "Insert/Edit Link" button. A popup with options will appear.
Select the image-link you want to delete and click the "Unlink" button. The link will be removed, the image is still there.