I would like to make the following chart but don't know how to do this.
Data:
- for 5 persons I have values of a variable Y at different stages of
development.
- the number of stages of development that are distinguished differs between
the 5 persons (3, 4, 5 or 6 different stages).

The chart:
-The chart should show a line for each person with horizontally the stage of
development and vertically variable Y (so 5 lines).
-The line for the person for which 3 stages are distinguished should start
all the way to the left of the figure and stop all the way to the right of
the figure. So should the line for the person for which 6 stages are
distinguished. The only way, I can think of to do this, is create 30 stages
(a multitude of 3, 4, 5 as well as 6) and spread the values over these 30
stages so that all lines start all the way to the left and end all the way to
the right of the chart.
- The absolute numbers are not of interest. Variable Y is measured very
different for the different persons (and cannot be brought back to the same
unit of measurement). It is only the trend that is of concern. How can I take
this into account for the chart?

Thanks for any advice, in advance.