Nested Tables in Creatio Word Printable Template

Hi,

Context : on the Account page I have:

• A detail “Buildings” (object: UsrBuilding) linked to Account via the lookup UsrBuildingToAcc.
• Inside Buildings, there is another detail “Apartments” (object: UsrApartments) linked to Building via the lookup UsrApartmentToBuil .

Need : 

• I need to generate a printable for the Account that contains the Apartments grouped by Building, similar to what is shown in the screenshot.

  If someone has idea about this issue, please let me know.

Thanks in advance.