Setting up multiple  data extraction templates in one review is not currently possible. As a workaround, we recommend including all elements in the same template and filling in only the relevant fields for each study. Once data is exported to CSV, you can split it into multiple sheets if you wish by filtering based on filled columns, and then copying and pasting them into new worksheets (quantitative and qualitative, for example). 

For more information on this, please read this article on our knowledge base.