To get x and y values, you can try right-clicking on the background
and then selecting Annotate > Point.
This will give a box with the x and y coordinates.
You can then move the endpoint around and the coordinates will correspondingly change.
You would then need to repeat this for every spot you want and then type in the coordinates
into your datasource.
Please see workbook v10.5 attached in the Forum Thread:
288641annotate.twbx 203.4 KB