You can utilize the drawing tools available on the left-hand side of the chart to annotate with trend lines, support and resistance levels, Fibonacci retracements, and other graphical elements.

Here are some of the available drawing tools:

Trend Line Tools

• Trend Line
• Arrow
• Ray

Geometric Shapes

• Brush
• Highlighter
• Rectangle

Gann and Fibonacci Tools

• Fib Retracement
• Trend-Based Fib Extension
• Pitchfork

Annotation Tools

• Text
• Anchored Text
• Note

Icons

• Arrows
• Currency

The full list of Drawing tools can be found here.