Moving frames with Oracle Reports

Goodmorning,

I have a small problem with my oracle reports. I'm creating a Hierarchical report (Parent , child , .... ). Now I want to see that structure in my report. For the moment I'm using the LPAD in my query but my labels in front of my fields are not moving with the fields.
So I want to use a trigger that moves the items in the frame to the right when they are on another LEVEL (Parent = LEVEL 1 ; CHILD1 = LEVEL 2 , .....).

Are is there anyone who has experience with moving items of a report using Triggers.

Thx