• Download module from client area
  - Extract zip file
  - Upload to it your whmcs module folder (/var/www/html/modules/servers/)
  - Now login to admin and add product
  - In order to create and configure product, go to 'System Settings' → 'Products/Services'.
  - Create new product and assign module by Module Settings' section, choose both 'Contabo' and a previously created server group from dropdown menus.
  - Fill required fields https://www.awesomescreenshot.com/image/32506107?key=781141c8de2a486540e8d09a4a2f86e7
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  - You can see "Create Config Option" click it, it will create configurable option for images to user to select during order. You can see price for it by edit configurable options