After working in Data Workbench, you can display one of the many pre-configured workspaces delivered with Data Workbench.
The sidebar is a persistent feature of the workspace, unless you hide it. See Configuring the Sidebar.
To display an existing workspace
On the desired Worktop tab, click the thumbnail of the workspace you want to display.
After opening a new workspace, you may need to click Add > Temporarily Unlock.
Below is an example of an open workspace.
To scroll within a workspace
With your cursor outside of the workspace, use the scroll wheel on your mouse to scroll through the workspace.