If you want to overwrite any image, firstly you need to find out the filename, and by default it will be located under
app/assets/images. For example if you want to change the header logo (
app/assets/images/logo_header.png) you must create another file with the exact same file name under
app/assets/images/customfolder. The images and icons that you will most likely want to change are:
You'll find the city map at
/app/assets/images/map.jpg, just replace it with an image of your cities districts (example).
Afterwards we recommend you to use an online tool like http://imagemap-generator.dariodomi.de/ or https://www.image-map.net/ to generate the html coordinates to be able to generate a image-map for each of the districts. Those coordinates should be introduced on the respective Geozones at the admin geozones panel (