In the Toolbar menu, within the "Views" dropdown, there is an option to view Tasks using the D3 Task Visualiser.
Click on "Launch D3" and then apply filters, if needed. You will be presented with a concentric circle showing your Projects on the innermost ring, Task Groups on the next, and Tasks on the outermost. These are coloured according to their RAG status. Clicking on a Project will zoom into that Project, and again on the Task Group. This allows a quick and easy way to drill down to the Tasks of a certain RAG status.