Arrow Tool

The following settings can be adjusted using a vertical tool slider:

Width—controls the width of the line using a vertical slider next to the tool's location. Slide up or down to set the width.

The following settings can be adjusted from the context toolbar:

Keep selected—when enabled (default), the new shape layer will be selected on creation. When disabled, the new object is deselected which prevents it from adopting the next object’s stroke/fill properties.
Thickness—controls the height of the arrow body.
Start Arrow Type—sets the style at the arrow's left end.
Proportional—For Left or Right ends, when enabled (default), the head proportions remain fixed when the arrow is resized lengthways. If this option is off, the head resizes with the design.
End Arrow Type—sets the style at the arrow's right end.
Convert to Curves—converts the selected object into a series of connected lines and nodes.