System configuration is a very useful feature of the Magento platform. At the same time, it’s easy to create new configurations for your own custom solutions. We’ve already touched the topic on how to add new system configurations with different fields. Today I would like to describe one more type of fields, which can be used depending on your needs. This is a dynamic field block. Sometimes we need to have some complex data managed via system configurations, or we even don’t know beforehand the number of records to be added. In this case it’s impossible to create the exact fieldset in a system configuration tab. Therefore, dynamic fields will be really useful.