sql server - SSRS line subgrouping by lines and not by columns -

i want have row subgroup act head line details belonging each subgroup (see below)

this i've done far

something wrong i'm unsure where. i've used table. i've tried matrix did not expected.

any tips welcomed.

create new tablix, right click details group, select add group / parent group , use settings:

you tablix this:

delete left column (created group).

delete first row , use libeldestinataire field in selected cell.

merge 3 cell next first cell , set other fields in next row:

you this:

in preview should this:

apply color , formats want cells , desired result.

let me know if helps.

Today