Short video for trend line : https://d.pr/v/AcPHk7
To create any trend lines or line studies, look for the toolbar below, usually found just above the ‘market watch’ section.
Can’t see the toolbar?
If these options are not visible, click on View, then Toolbars and make sure the ‘Line Studies’ option is ticked.
Once the correct line study has been selected, left click on the chart to start drawing.