Overlays - Drawings Tools
To draw an overlay click on the appropriate icon , and draw it by dragging the mouse.
To delete an overlay
Select it and click ‘Delete’ on the keyboard
Right click it and select the Delete menu item.
Move / Resize an overlay by dragging it’s corners or edges
Right-click an overlay and select the Appearance menu item.
For Gann and Fibonacci studies, change at what % the lines appear by: right clicking it & selecting the Parameters menu item.