How to enable amazon check out option in my admin panel magento ver 184.108.40.206?
Default magento does not have this type of feature.
You need to use 3-rd party extension.
May be below extension a reference for you requirement:
You can find lot of extension from magento connect: http://www.magentocommerce.com/magento-connect/catalogsearch/result/?q=amazon&pl=0