Each Query Designer window consists of:
The palette of the elements.
The main drawing scene is the place where elements are constructed into a schema.
Provides information about a currently selected element and allows configuring it.
On the image below you can see these components in a maximized Query Designer window:
<center> <br> <img src="/wiki/download/attachments/4686202/Query Designer Window Components.png"/> <br> </center>
All these components are resizable and can be adjusted to individual needs.