An arrow that turns as many times as it needs to, with nothing on the end of it.
A Leader points at something and gets out of the way. It is a run of straight segments with a solid
arrowhead on the first point, and no label of its own, for when the text it belongs to is already on
the page: an existing note, a schedule, a Text Box placed
separately.
Draw it: click on the thing being pointed at first, then click each turn on the way out, then
press Enter.
Keys while placing
Enter: finish the leader.
Backspace: remove the last point.
Escape: also finishes, with the points placed so far. It does not discard the leader.
Settings
Line Weight: 1 to 10, default 1.
Colour: the line and the head. Default red.
Opacity: available.
Start ending / End ending: the same nine styles as the other line tools, so the head can be moved to the far end or taken off entirely.
Notes
The arrowhead is on the point you clicked first, not the one you finished at. Start at the target and work outwards, the same way round as the Callout.
The head is a solid arrow, the drafting-standard leader head, and it matches the one a Callout draws so the two sit together on a sheet.
The toolbar icon is teal to group it with the other note tools. That is the icon only, and it has no bearing on the colour it draws with.
See also
Where the note has to be typed as well as pointed at, use
Callout, which is this leader with a label box on the end of it.
For a turning line with no arrowhead by default, use
Polyline, which is the same multi point placement in the Draw
group.