Multi zone and multi drop

Hello,

In my project i need to customize 4 areas on a product. This part is running. On click i can choose image or text and put my data. My datas are cropped when i leave the current area. 

But, i would like to put several image or text on every area. I thought about the layers, but i don't want my customer can delete or add area's Do you have any ideas where to look ? 

Thanks !