You can do it but its not straight forward.
Attached is a technique that creates a new dimension that groups all the properties and the different totals as a group of 5 values that are part of a new dimension (with the wonderful name of 'ChartDimension').
Also attached is the sample app that you can drop into your c:\users\<user>\my documents\qlik\sense\apps directory to view on the desktop
Thank you for your answer. I saw the sample app and I don't understand the example and the solution doesn't seem to be right.. Indeed there is a "dimension" (actually a field, not a stored dimension) in the sample app that regroup the 5 values : prop 1, prop 2, prop 3, subtotal and grand total but the computations for the subtotal and grand total are not correct.
The first table is correct and contains the value I wrote in my question for the three properties. The second table however contains, for every column, the grand total. Could you explain this solution a bit more ?