I would like to make specific rows (rows with value ’11’, ’13’ and ’15’) to be “non-expandable”. These rows should only show the value for RR_RAD1 but not for the other columns (RR_RAD2 - VERKSAMHET_NAMN - AKTIVITET – KONTO).
To your first question, there is none. If chart is a pivot table and "Always fully expanded" is not marked, all possible values are expandable/collapsable.
If you want to make one row having the same color, you will have to expand all dimensions and expressions using the [+] sign at the left of the name and set the same Background Color for all of them.