Users can access the Query Builder by clicking on Dashboard via the Burger menu on the top left hand side of the Home screen.
The Query Designer can be used to test GraphQL queries against the data in your WorkfloPlus Team. A default query is provided in the left panel and the resulting data is presented in the right panel. 
Once you have written your query you can export your WFP data to other systems via an integration.
See https://intoware.github.io/workfloplus-docs/ for further information on writing queries and extracting data from WFP.
PLEASE NOTE: If you write a new query it will not be saved when you exit. We recommend that you save copies of any queries you have written in a separate file for future reference.